MESON Chess Problem Database
Problem Display
PID: 168428 (1q1R4/5PPK/6P1/2BbN1QN/4k3/Rr6/2P1nrP1/b7 w - - 0 1)
Petite, Efren
Sachova skladba, 1998
#2
12 + 7
| 6490 | yacpdb | 2018 |
| 5454 | Near Snap | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Rxg2
- 2.Sf6#
- 1...Rf6
- 2.Sxf6#
- 1...Rb1
- 2.Re3#
- 1...Rb2
- 2.Re3#
- 1...Rd3
- 2.cxd3#
- 1...Re3
- 2.Rxe3#
- 1...Rb4
- 2.Re3#
- 1...Rb5
- 2.Re3#
- 1...Rb6
- 2.Re3#
- 1...Rb7
- 2.Re3#
- 1...Sc3
- 2.Sg3#
- 1...Sf4
- 2.Sf6#
- 1...Rxg2
- Tries
- 1.Sd3?
- threat
- 2.Sxf2#
- 2.Qxd5#
- 1...Qxd8
- 2.Sxf2#
- 1...Rxg2
- 2.Qxd5#
- 1...Rxf7
- 2.Qxd5#
- 1...Rxd3
- 2.cxd3#
- 1...Bxf7
- 2.Sxf2#
- 1...Qg3
- 2.Qxd5#
- 1...Qf4
- 2.Qxd5#
- 1...Qe5
- 2.Sxf2#
- 1...Qd6
- 2.Sxf2#
- 1...Qb7
- 2.Sxf2#
- 1...Qa8
- 2.Sxf2#
- 1...Rf1
- 2.Qxd5#
- 1...Rf3
- 2.Qxd5#
- 1...Rf4
- 2.Qxd5#
- 1...Rf5
- 2.Qe3#
- 1...Rf6
- 2.Qxd5#
- 1...Be5
- 2.Sxf2#
- 1...Bc4
- 2.Sxf2#
- 1...Bc6
- 2.Sxf2#
- 1...Be6
- 2.Sxf2#
- 1...Bb7
- 2.Sxf2#
- 1...Ba8
- 2.Sxf2#
- 1...Sc3
- 2.Sxf2#
- 1...Sd4
- 2.Sxf2#
- 1...Sf4
- 2.Sxf2#
- 2.Sg3#
- 1...Bd4!
- threat
- 1.Sg4?
- threat
- 2.Sxf2#
- 2.Qxd5#
- 1...Qxd8
- 2.Sxf2#
- 1...Rxg2
- 2.Qxd5#
- 1...Rxf7
- 2.Qxd5#
- 1...Bxf7
- 2.Sxf2#
- 1...Qg3
- 2.Qxd5#
- 1...Qf4
- 2.Qxd5#
- 1...Qe5
- 2.Sxf2#
- 1...Qd6
- 2.Sxf2#
- 1...Qb7
- 2.Sxf2#
- 1...Qa8
- 2.Sxf2#
- 1...Rf1
- 2.Qxd5#
- 1...Rff3
- 2.Qxd5#
- 1...Rf4
- 2.Qxd5#
- 1...Rf6
- 2.Qxd5#
- 1...Rd3
- 2.Sxf2#
- 2.cxd3#
- 1...Rbf3
- 2.Qxd5#
- 1...Bd4
- 2.Qxd5#
- 1...Be5
- 2.Sxf2#
- 1...Bc4
- 2.Sxf2#
- 1...Bc6
- 2.Sxf2#
- 1...Be6
- 2.Sxf2#
- 1...Bb7
- 2.Sxf2#
- 1...Ba8
- 2.Sxf2#
- 1...Sc3
- 2.Sxf2#
- 1...Sf4
- 2.Sxf2#
- 1...Rf5!
- threat
- 1.Sd3?
- Keys
- 1.Sf3!
- threat
- 2.Sd2#
- 2.Qxd5#
- 1...Qxd8
- 2.Sd2#
- 1...Rfxf3
- 2.Qxd5#
- 1...Rbxf3
- 2.Qxd5#
- 1...Bxf7
- 2.Sd2#
- 1...Qf4
- 2.Qxd5#
- 1...Qe5
- 2.Sd2#
- 1...Qd6
- 2.Sd2#
- 1...Qb4
- 2.Qxd5#
- 1...Qb7
- 2.Sd2#
- 1...Qa8
- 2.Sd2#
- 1...Rd3
- 2.cxd3#
- 1...Bc3
- 2.Qxd5#
- 1...Bd4
- 2.Sd2#
- 1...Be5
- 2.Sd2#
- 1...Bc4
- 2.Sd2#
- 1...Bc6
- 2.Sd2#
- 1...Be6
- 2.Sd2#
- 1...Bb7
- 2.Sd2#
- 1...Ba8
- 2.Sd2#
- 1...Sc1
- 2.Qxd5#
- 1...Sg1
- 2.Qxd5#
- 1...Sc3
- 2.Sf6#
- 1...Sg3
- 2.Qxd5#
- 1...Sd4
- 2.Sf6#
- 1...Sf4
- 2.Sg3#
- threat
- 1.Sf3!
Anticipated by 142566(1988)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 22
- REMOVED MATES = 9
- Sets
- R(c);N_GUARD,XP(B)::S(G)
- R(c);N_GUARD::S(G),XR(c)
- R(d);OGATE::R1(C)
- R(d);OGATE::P(A),XR(d)
- R(d);OGATE::R1(C),XR(d)
- S(b);N_GUARD,S_CUTR(d)::S(G)
- S(b);S_CUTR(c)::S(G)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(g);XR(L)::S(E),XR(c)
- R(c);XP(B)::QAB1(F),XB(f)
- R(c);P_PINP(J),XP(I)::QAB1(F),XB(f)
- R(d);OGATE,XS(E)::P(A),XR(d)
- B(f);XP(I)::S(E),XR(c)
- Q(g);::QAB1(F),XB(f)
- Q(g);::S(E),XR(c)
- R(c);::QAB1(F),XB(f)
- R(c);SBLOCK::QAR1(F)
- B(a);::S(E),XR(c)
- B(f);::S(E),XR(c)
- S(b);::S(E),XR(c)
- Refutation
- B(a);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(g);XR(L)::S(E),XR(c)
- R(c);XP(B)::QAB1(F),XB(f)
- R(c);P_PINP(J),XP(I)::QAB1(F),XB(f)
- B(f);XP(I)::S(E),XR(c)
- Q(g);::QAB1(F),XB(f)
- Q(g);::S(E),XR(c)
- R(c);::QAB1(F),XB(f)
- R(d);::QAB1(F),XB(f)
- B(a);::QAB1(F),XB(f)
- B(a);::S(E),XR(c)
- B(f);::S(E),XR(c)
- S(b);::S(E),XR(c)
- Refutation
- R(c);
- Try
- Actual
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(g);XR(L)::S(E)
- R(c);XS(E)::QAB1(F),XB(f)
- R(d);XS(E)::QAB1(F),XB(f)
- B(f);XP(I)::S(E)
- Q(g);::QAB1(F),XB(f)
- Q(g);::S(E)
- R(d);OGATE::P(A),XR(d)
- B(a);::QAB1(F),XB(f)
- B(a);::S(E)
- B(f);::S(E)
- S(b);::QAB1(F),XB(f)
- S(b);S_CUTB(a)::S(G)
- S(b);N_GUARD,S_CUTQ(g)::S(G)
Developed and maintained by Brian Stephenson.
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