MESON Chess Problem Database
Problem Display
PID: 108996 (2N5/p2N1n2/2p1p3/3k1p1K/p1R5/4B3/2b5/1Q1r1B2 w - - 0 1)
Monteiro da Silveira, Jose Luis
Boletim da UBP, 1962
#2
7 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxb1
- 2.Rd4#
- 1...Rc1
- 2.Rd4#
- 1...Re1
- 2.Rd4#
- 1...Rxf1
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Bb3
- 2.Rc5#
- 1...Bd3
- 2.Rd4#
- 1...Be4
- 2.Rc5#
- 1...Se5
- 2.Sf6#
- 1...Sd6
- 2.Se7#
- 1...c5
- 2.Qb7#
- 1...Rxb1
- Tries
- 1.Bg2+?
- 1...Be4
- 2.Rc5#
- 1...Kxc4!
- 1...Be4
- 1.Rh4?
- threat
- 2.Bc4#
- 1...Rxf1
- 2.Rd4#
- 1...c5
- 2.Qb7#
- 1...Rd3
- 2.Bg2#
- 1...Rd4
- 2.Rxd4#
- 1...Bb3
- 2.Bg2#
- 1...Bd3
- 2.Rd4#
- 1...Be4
- 2.Qa2#
- 1...Se5
- 2.Sf6#
- 1...Sd6
- 2.Se7#
- 1...f4!
- threat
- 1.Qa2?
- threat
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Bb3
- 2.Qg2#
- 1...c5!
- threat
- 1.Qxc2?
- threat
- 2.Bg2#
- 2.Rc5#
- 2.Qxd1#
- 2.Qg2#
- 1...Rxf1
- 2.Rd4#
- 2.Rc5#
- 2.Qd3#
- 1...c5
- 2.Bg2#
- 2.Rxc5#
- 2.Qg2#
- 1...Ra1
- 2.Bg2#
- 2.Rd4#
- 2.Rc5#
- 2.Qd3#
- 2.Qd2#
- 2.Qg2#
- 1...Rb1
- 2.Bg2#
- 2.Rd4#
- 2.Rc5#
- 2.Qd3#
- 2.Qd2#
- 2.Qg2#
- 1...Rc1
- 2.Bg2#
- 2.Rd4#
- 2.Rc5#
- 2.Qd3#
- 2.Qd2#
- 2.Qg2#
- 1...Re1
- 2.Bg2#
- 2.Rd4#
- 2.Rc5#
- 2.Qd3#
- 2.Qd2#
- 2.Qg2#
- 1...Rd2
- 2.Rc5#
- 2.Qxd2#
- 1...Rd3
- 2.Bg2#
- 2.Qxd3#
- 1...Rd4
- 2.Rxd4#
- 2.Rc5#
- 1...Se5
- 2.Sf6#
- 2.Rc5#
- 1...Sg5
- 2.Rc5#
- 2.Qxd1#
- 1...Sd6
- 2.Se7#
- 2.Rc5#
- 2.Qxd1#
- 1...f4
- 2.Rc5#
- 2.Qxd1#
- 2.Qe4#
- 1...e5!
- threat
- 1.Qxd1+?
- 1...Bd3
- 2.Rd4#
- 2.Qxd3#
- 1...Bxd1+!
- 1...Bd3
- 1.Qb4?
- threat
- 2.Se7#
- 2.Rc5#
- 2.Qc5#
- 1...Rd4
- 2.Rxd4#
- 1...c5
- 2.Rxc5#
- 2.Qxc5#
- 2.Qb7#
- 1...e5!
- threat
- 1.Qb5+?
- 1...c5
- 2.Qxc5#
- 2.Qb7#
- 1...cxb5!
- 1...c5
- 1.Qb6?
- threat
- 2.Qc5#
- 2.Qxc6#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 2.Qxc6#
- 1...e5
- 2.Qxc6#
- 1...Se5
- 2.Sf6#
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...c5
- 2.Se7#
- 2.Qxc5#
- 2.Qb7#
- 1...axb6!
- threat
- 1.Qb7?
- threat
- 2.Qxc6#
- 1...Se5
- 2.Sf6#
- 1...Sd8!
- threat
- 1.Bg2+?
- Keys
- 1.Rf4!
- threat
- 2.Bc4#
- 1...Rxf1
- 2.Rd4#
- 1...c5
- 2.Qb7#
- 1...Rd3
- 2.Bg2#
- 1...Rd4
- 2.Rxd4#
- 1...Bb3
- 2.Bg2#
- 1...Bd3
- 2.Rd4#
- 1...Be4
- 2.Qa2#
- 1...Se5
- 2.Sf6#
- 1...Sd6
- 2.Se7#
- threat
- 1.Rf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- R(a);N_GUARD,XQ(A)::R1(D)
- R(a);N_GUARD::R1(D)
- R(a);N_GUARD,XB(B)::R1(D)
- R(a);N_GUARD::R1(D),XR(a)
- B(b);::R1(D)
- B(b);S_CUTR(a)::R1(D)
- S(i);SBLOCK::S(F)
- S(i);SBLOCK::S(G)
- P(f);OGATEB::QAB(A)
- Tries
- Try
- B(B);CHECK
- Vars
- B(b);P_SPINB(b)::R1(D)
- Refutation
- K(d);S_FLIGHT,XR(D)
- Try
- R(D);
- Threat
- B(B)
- Vars
- R(a);N_GUARD,XB(B)::R1(D)
- P(f);OGATEB::QAB(A)
- R(a);S_CUTB(b)::B(B)
- R(a);N_GUARD::R1(D),XR(a)
- B(b);N_GUARD::B(B)
- B(b);S_CUTR(a)::R1(D)
- B(b);N_GUARD::QAB(A)
- S(i);SBLOCK::S(F)
- S(i);SBLOCK::S(G)
- Refutation
- P(e);
- Try
- Q(A);
- Threat
- QAB(A)+R(D),DCHECK
- Vars
- R(a);::QAB(A)+R(D),DCHECK,XR(a)
- B(b);OGATE::QAB(A)
- Refutation
- P(f);
- Try
- Q(A);XB(b)
- Threat
- DUALS(4)
- Refutation
- P(g);
- Try
- Q(A);CHECK,XR(a)
- Refutation
- B(b);CHECK,XQ(A)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(a);N_GUARD::R1(D),XR(a)
- Refutation
- P(g);
- Try
- Q(A);CHECK
- Refutation
- P(f);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(g);::QAB1(A),XP(f)
- S(i);::QAR1(A)
- Refutation
- P(h);XQ(A)
- Try
- Q(A);P_PINP(f)
- Threat
- QAB1(A),XP(f)
- Vars
- S(i);SBLOCK::S(F)
- Refutation
- S(i);
- Try
- Actual
- R(D);
- Threat
- B(B)
- Vars
- R(a);N_GUARD,XB(B)::R1(D)
- P(f);OGATEB::QAB(A)
- R(a);S_CUTB(b)::B(B)
- R(a);N_GUARD::R1(D),XR(a)
- B(b);N_GUARD::B(B)
- B(b);S_CUTR(a)::R1(D)
- B(b);N_GUARD::QAB(A)
- S(i);SBLOCK::S(F)
- S(i);SBLOCK::S(G)
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