Meson Chess Problem Database

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Problem Display

PID: 229131 (N7/bp2KPr1/1pk3PQ/1Rpb4/P7/8/8/7B w - - 0 1)

Simay-Molnar, Aladar

1st Prize, Allgemeine Zeitung Chemnitz, 1926

8 + 7

6490	yacpdb	2020

SOLUTION

SOUND
Sets
- 1...Rxg6
  - 2.Qxg6#
- 1...Rxf7+
  - 2.gxf7#
- 1...Rh7
  - 2.gxh7#
- 1...Rg8
  - 2.g7#
- 1...Bxh1
  - 2.Qxh1#
- 1...Bg2
  - 2.Bxg2#
- 1...Bf3
  - 2.Bxf3#
- 1...Be4
  - 2.Bxe4#
- 1...Bb8
  - 2.Rxb6#
- 1...c4
  - 2.Bxd5#
Tries
- 1.Bg2?
  - 1...Rxf7+
    - 2.gxf7#
  - 1...Rxg6
    - 2.Qxg6#
  - 1...Bf3
    - 2.Bxf3#
  - 1...Be4
    - 2.Bxe4#
  - 1...Rh7
    - 2.gxh7#
  - 1...Rg8
    - 2.g7#
  - 1...Bb8
    - 2.Rxb6#
  - 1...c4
    - 2.Bxd5#
  - 1...Bxg2!
- 1.Bf3?
  - 1...Rxf7+
    - 2.gxf7#
  - 1...Rxg6
    - 2.Qxg6#
  - 1...Be4
    - 2.Bxe4#
  - 1...Rh7
    - 2.gxh7#
  - 1...Rg8
    - 2.g7#
  - 1...Bb8
    - 2.Rxb6#
  - 1...c4
    - 2.Bxd5#
  - 1...Bxf3!
- 1.Be4?
  - 1...Rxf7+
    - 2.gxf7#
  - 1...Rxg6
    - 2.Qxg6#
  - 1...Rh7
    - 2.gxh7#
  - 1...Rg8
    - 2.g7#
  - 1...Bb8
    - 2.Rxb6#
  - 1...c4
    - 2.Bxd5#
  - 1...Bxe4!
- 1.Rb1?
  - 1...Rxf7+
    - 2.gxf7#
  - 1...Rxg6
    - 2.Qxg6#
  - 1...Bxh1
    - 2.Qxh1#
  - 1...Bg2
    - 2.Bxg2#
  - 1...Bf3
    - 2.Bxf3#
  - 1...Be4
    - 2.Bxe4#
  - 1...Rh7
    - 2.gxh7#
  - 1...Rg8
    - 2.g7#
  - 1...Bb8
    - 2.Rxb6#
  - 1...b5
    - 2.axb5#
  - 1...c4!
- 1.Rb2?
  - 1...Rxf7+
    - 2.gxf7#
  - 1...Rxg6
    - 2.Qxg6#
  - 1...Bxh1
    - 2.Qxh1#
  - 1...Bg2
    - 2.Bxg2#
  - 1...Bf3
    - 2.Bxf3#
  - 1...Be4
    - 2.Bxe4#
  - 1...Rh7
    - 2.gxh7#
  - 1...Rg8
    - 2.g7#
  - 1...Bb8
    - 2.Rxb6#
  - 1...b5
    - 2.axb5#
  - 1...c4!
- 1.Rb3?
  - 1...Rxf7+
    - 2.gxf7#
  - 1...Rxg6
    - 2.Qxg6#
  - 1...Bxh1
    - 2.Qxh1#
  - 1...Bg2
    - 2.Bxg2#
  - 1...Bf3
    - 2.Bxf3#
  - 1...Be4
    - 2.Bxe4#
  - 1...Rh7
    - 2.gxh7#
  - 1...Rg8
    - 2.g7#
  - 1...Bb8
    - 2.Rxb6#
  - 1...b5
    - 2.axb5#
  - 1...c4!
- 1.Qd2?
  - threat
    - 2.Bxd5#
    - 2.Qxd5#
  - 1...Bxh1
    - 2.Qd6#
    - 2.Qd7#
  - 1...Bg2
    - 2.Bxg2#
    - 2.Qxg2#
    - 2.Qd6#
    - 2.Qd7#
  - 1...Bf3
    - 2.Bxf3#
    - 2.Qd6#
    - 2.Qd7#
  - 1...Be4
    - 2.Bxe4#
    - 2.Qd6#
    - 2.Qd7#
  - 1...Rxf7+!
- 1.Qf4?
  - threat
    - 2.Qd6#
    - 2.Qc7#
    - 2.Qf6#
  - 1...Rxg6
    - 2.Qc7#
  - 1...Bxh1
    - 2.Qd6#
  - 1...Bg2
    - 2.Bxg2#
    - 2.Qd6#
  - 1...Bf3
    - 2.Bxf3#
    - 2.Qd6#
    - 2.Qxf3#
  - 1...Be4
    - 2.Bxe4#
    - 2.Qd6#
    - 2.Qxe4#
  - 1...Bb8
    - 2.Rxb6#
  - 1...Rxf7+!
- 1.Qxg7?
  - threat
    - 2.Qf6#
  - 1...Bg2
    - 2.Bxg2#
  - 1...Bf3
    - 2.Bxf3#
  - 1...Be4
    - 2.Bxe4#
  - 1...Bb8
    - 2.Rxb6#
  - 1...Bxh1!
- 1.Qh2?
  - threat
    - 2.Qd6#
    - 2.Qc7#
  - 1...Rxg6
    - 2.Qc7#
  - 1...Bxh1
    - 2.Qd6#
    - 2.Qxh1#
  - 1...Bg2
    - 2.Bxg2#
    - 2.Qd6#
    - 2.Qxg2#
  - 1...Bf3
    - 2.Bxf3#
    - 2.Qd6#
  - 1...Be4
    - 2.Bxe4#
    - 2.Qd6#
  - 1...Bb8
    - 2.Rxb6#
  - 1...Rxf7+!
- 1.Qh3?
  - threat
    - 2.Qe6#
    - 2.Qd7#
    - 2.Qc8#
  - 1...Rxg6
    - 2.Qd7#
    - 2.Qc8#
  - 1...Bxh1
    - 2.Qe6#
    - 2.Qd7#
    - 2.Qxh1#
  - 1...Bg2
    - 2.Bxg2#
    - 2.Qxg2#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Bf3
    - 2.Bxf3#
    - 2.Qe6#
    - 2.Qd7#
    - 2.Qxf3#
  - 1...Be4
    - 2.Bxe4#
    - 2.Qe6#
    - 2.Qd7#
  - 1...Rg8
    - 2.Qe6#
    - 2.Qd7#
  - 1...Bb8
    - 2.Rxb6#
    - 2.Qd7#
  - 1...Rxf7+!
- 1.Qh5?
  - threat
    - 2.Bxd5#
    - 2.Qxd5#
  - 1...Bxh1
    - 2.Qxh1#
  - 1...Bg2
    - 2.Bxg2#
  - 1...Bf3
    - 2.Bxf3#
    - 2.Qxf3#
  - 1...Be4
    - 2.Bxe4#
  - 1...Rxf7+!
- 1.Qh8?
  - threat
    - 2.Qc8#
    - 2.Qe8#
  - 1...Bxh1
    - 2.Qxh1#
  - 1...Bg2
    - 2.Bxg2#
  - 1...Bf3
    - 2.Bxf3#
  - 1...Be4
    - 2.Bxe4#
  - 1...Rg8
    - 2.Qf6#
  - 1...Bb8
    - 2.Rxb6#
    - 2.Qe8#
  - 1...Rxf7+!
Keys
- 1.Rb4!
  - 1...Rxf7+
    - 2.gxf7#
  - 1...Rxg6
    - 2.Qxg6#
  - 1...Bxh1
    - 2.Qxh1#
  - 1...cxb4
    - 2.Qc1#
  - 1...Bg2
    - 2.Bxg2#
  - 1...Bf3
    - 2.Bxf3#
  - 1...Be4
    - 2.Bxe4#
  - 1...c4
    - 2.Rxc4#
  - 1...Rh7
    - 2.gxh7#
  - 1...Rg8
    - 2.g7#
  - 1...Bb8
    - 2.Rxb6#
  - 1...b5
    - 2.axb5#

FEATURES

Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
Sets
- R(g);N_PINP(G),OGATE,P_SPINR(g),XP(D)::QAR(E),XR(g)
- R(g);CHECK,OGATE,XP(G)::QAR(E)+P(D),XR(g)
- R(g);OGATE::QAR(E)+P(D),XR(g)
- R(g);N_PINP(G),OGATE::QAR(E)+P(D)
- B(b);N_SPINB(b),OGATE,XB(A)::QAB(E),XB(b)
- B(b);OGATEB::B(A),XB(b)
- B(e);N_GUARD::R1(C),XP(c)
- P(a);::B(A),XB(b)
Tries
- Try
  - B(A);
  - Vars
    - R(g);CHECK,OGATE,XP(G)::QAR(E)+P(D),XR(g)
    - R(g);N_PINP(G),OGATE,P_SPINR(g),XP(D)::QAR(E),XR(g)
    - B(b);OGATEB::B(A),XB(b)
    - R(g);OGATE::QAR(E)+P(D),XR(g)
    - R(g);N_PINP(G),OGATE::QAR(E)+P(D)
    - B(e);N_GUARD::R1(C),XP(c)
    - P(a);::B(A),XB(b)
  - Refutation
    - B(b);N_SPINB(b),XB(A)
- Try
  - B(A);
  - Vars
    - R(g);CHECK,OGATE,XP(G)::QAR(E)+P(D),XR(g)
    - R(g);N_PINP(G),OGATE,P_SPINR(g),XP(D)::QAR(E),XR(g)
    - B(b);OGATEB::B(A),XB(b)
    - R(g);OGATE::QAR(E)+P(D),XR(g)
    - R(g);N_PINP(G),OGATE::QAR(E)+P(D)
    - B(e);N_GUARD::R1(C),XP(c)
    - P(a);::B(A),XB(b)
  - Refutation
    - B(b);N_SPINB(b),XB(A)
- Try
  - B(A);
  - Vars
    - R(g);CHECK,OGATE,XP(G)::QAR(E)+P(D),XR(g)
    - R(g);N_PINP(G),OGATE,P_SPINR(g),XP(D)::QAR(E),XR(g)
    - R(g);OGATE::QAR(E)+P(D),XR(g)
    - R(g);N_PINP(G),OGATE::QAR(E)+P(D)
    - B(e);N_GUARD::R1(C),XP(c)
    - P(a);::B(A),XB(b)
  - Refutation
    - B(b);N_SPINB(b),XB(A)
- Try
  - R(C);
  - Vars
    - R(g);CHECK,OGATE,XP(G)::QAR(E)+P(D),XR(g)
    - R(g);N_PINP(G),OGATE,P_SPINR(g),XP(D)::QAR(E),XR(g)
    - B(b);N_SPINB(b),OGATE,XB(A)::QAB(E),XB(b)
    - B(b);OGATEB::B(A),XB(b)
    - R(g);OGATE::QAR(E)+P(D),XR(g)
    - R(g);N_PINP(G),OGATE::QAR(E)+P(D)
    - B(e);N_GUARD::R1(C),XP(c)
    - P(c);OGATE::P(B),XP(c)
  - Refutation
    - P(a);
- Try
  - R(C);
  - Vars
    - R(g);CHECK,OGATE,XP(G)::QAR(E)+P(D),XR(g)
    - R(g);N_PINP(G),OGATE,P_SPINR(g),XP(D)::QAR(E),XR(g)
    - B(b);N_SPINB(b),OGATE,XB(A)::QAB(E),XB(b)
    - B(b);OGATEB::B(A),XB(b)
    - R(g);OGATE::QAR(E)+P(D),XR(g)
    - R(g);N_PINP(G),OGATE::QAR(E)+P(D)
    - B(e);N_GUARD::R1(C),XP(c)
    - P(c);OGATE::P(B),XP(c)
  - Refutation
    - P(a);
- Try
  - R(C);
  - Vars
    - R(g);CHECK,OGATE,XP(G)::QAR(E)+P(D),XR(g)
    - R(g);N_PINP(G),OGATE,P_SPINR(g),XP(D)::QAR(E),XR(g)
    - B(b);N_SPINB(b),OGATE,XB(A)::QAB(E),XB(b)
    - B(b);OGATEB::B(A),XB(b)
    - R(g);OGATE::QAR(E)+P(D),XR(g)
    - R(g);N_PINP(G),OGATE::QAR(E)+P(D)
    - B(e);N_GUARD::R1(C),XP(c)
    - P(c);OGATE::P(B),XP(c)
  - Refutation
    - P(a);
- Try
  - Q(E);
  - Threat
    - DUALS(2)
  - Refutation
    - R(g);CHECK,XP(G)
- Try
  - Q(E);
  - Threat
    - DUALS(3)
  - Vars
    - R(g);N_PINP(G),XP(D)::QAR1(E)
    - B(b);N_SPINB(b),XB(A)::QAR1(E)
    - B(e);N_GUARD::R1(C),XP(c)
  - Refutation
    - R(g);CHECK,XP(G)
- Try
  - Q(E);N_SPINP(G),XR(g)
  - Threat
    - QAR(E)
  - Vars
    - B(b);OGATEB::B(A),XB(b)
    - B(e);N_GUARD::R1(C),XP(c)
  - Refutation
    - B(b);N_SPINB(b),XB(A)
- Try
  - Q(E);
  - Threat
    - DUALS(2)
  - Vars
    - R(g);N_PINP(G),XP(D)::QAR1(E)
    - B(e);N_GUARD::R1(C),XP(c)
  - Refutation
    - R(g);CHECK,XP(G)
- Try
  - Q(E);
  - Threat
    - DUALS(3)
  - Refutation
    - R(g);CHECK,XP(G)
- Try
  - Q(E);
  - Threat
    - DUALS(2)
  - Vars
    - B(b);N_SPINB(b),OGATE,XB(A)::QAB(E),XB(b)
    - B(b);OGATEB::B(A),XB(b)
  - Refutation
    - R(g);CHECK,XP(G)
- Try
  - Q(E);
  - Threat
    - DUALS(2)
  - Vars
    - B(b);N_SPINB(b),OGATE,XB(A)::QAB(E),XB(b)
    - B(b);OGATEB::B(A),XB(b)
    - R(g);N_PINP(G),OGATE::QAR(E)
  - Refutation
    - R(g);CHECK,XP(G)
Actual
- R(C);
- Vars
  - R(g);CHECK,OGATE,XP(G)::QAR(E)+P(D),XR(g)
  - R(g);N_PINP(G),OGATE,P_SPINR(g),XP(D)::QAR(E),XR(g)
  - B(b);N_SPINB(b),OGATE,XB(A)::QAB(E),XB(b)
  - P(a);OGATEB,XR(C)::QAR(E)
  - B(b);OGATEB::B(A),XB(b)
  - P(a);OGATEB::R(C),XP(a)
  - R(g);OGATE::QAR(E)+P(D),XR(g)
  - R(g);N_PINP(G),OGATE::QAR(E)+P(D)
  - B(e);N_GUARD::R1(C),XP(c)
  - P(c);OGATE::P(B),XP(c)

MESON Chess Problem Database

Problem Display

PID: 229131 (N7/bp2KPr1/1pk3PQ/1Rpb4/P7/8/8/7B w - - 0 1)

SOLUTION

FEATURES