MESON Chess Problem Database
Problem Display
PID: 168486 (1KBRR1bB/1n1r4/Nn1r2N1/pP1kP1b1/3p4/1P2p3/2QP4/8 w - - 0 1)
Petite, Efren
Revista Romana de Sah, 1989
#2
12 + 10
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rc6
- 2.Qxc6#
- 1...Re6
- 2.Sc7#
- 1...Rf6
- 2.Sc7#
- 1...Rxg6
- 2.Sc7#
- 1...Rc7
- 2.Sxc7#
- 1...Re7
- 2.Qc6#
- 1...Rf7
- 2.Be6#
- 2.Qc6#
- 1...Rg7
- 2.Qc6#
- 1...Rh7
- 2.Qc6#
- 1...Rxd8
- 2.Sc7#
- 1...Bf4
- 2.Sxf4#
- 1...Bh4
- 2.Sf4#
- 1...Bf6
- 2.Sf4#
- 1...Be7
- 2.Sf4#
- 1...Bxd8
- 2.Sf4#
- 1...Sc4
- 2.bxc4#
- 1...d3
- 2.Qxd3#
- 1...a4
- 2.Sb4#
- 1...Rc6
- Tries
- 1.Se7+?
- 1...Ke6
- 2.Qf5#
- 1...Rxe7
- 2.Qc6#
- 1...Bxe7!
- 1...Ke6
- 1.Bxb7+?
- 1...Rc6
- 2.Sc7#
- 2.Bxc6#
- 2.Qxc6#
- 1...Rxb7+!
- 1...Rc6
- 1.Bxd7?
- threat
- 2.Sc7#
- 2.Bc6#
- 1...Rxd7
- 2.Sc7#
- 2.Qc6#
- 1...Bxd8
- 2.Sf4#
- 1...Sxd8
- 2.Sc7#
- 1...d3
- 2.Qxd3#
- 1...Rc6
- 2.Bxc6#
- 2.Be6#
- 2.Qxc6#
- 1...Be7
- 2.Sc7#
- 2.Sf4#
- 2.Sxe7#
- 1...Sc4
- 2.Bc6#
- 2.bxc4#
- 1...Sa8
- 2.Bc6#
- 1...Sxd7+!
- threat
- 1.Rxd7?
- threat
- 2.Sc7#
- 2.Bxb7#
- 2.Qc6#
- 1...Rxd7
- 2.Qc6#
- 1...Sxc8
- 2.Sc7#
- 2.Qc6#
- 1...Be7
- 2.Sc7#
- 2.Sf4#
- 1...d3
- 2.Qxd3#
- 1...Bd8
- 2.Sf4#
- 2.Bxb7#
- 2.Qc6#
- 1...Sc4
- 2.Bxb7#
- 2.bxc4#
- 1...Sa8
- 2.Bxb7#
- 2.Qc6#
- 1...Sc5
- 2.Sc7#
- 2.Rxd6#
- 1...Sd8
- 2.Sc7#
- 2.Rxd6#
- 1...Sxd7+!
- threat
- 1.dxe3?
- threat
- 2.Qg2#
- 2.e4#
- 1...Bxe3
- 2.Qg2#
- 1...dxe3
- 2.Qd3#
- 1...Be7
- 2.Sf4#
- 1...d3
- 2.Qxd3#
- 2.Qg2#
- 1...Rf6
- 2.Sc7#
- 2.e4#
- 1...Rf7
- 2.Be6#
- 2.Qc6#
- 2.e4#
- 1...Sc5!
- threat
- 1.d3?
- threat
- 2.Qg2#
- 1...Be7
- 2.Sf4#
- 1...Rf6
- 2.Sc7#
- 1...Rf7
- 2.Be6#
- 2.Qc6#
- 1...Sc5
- 2.Qxc5#
- 1...e2!
- threat
- 1.Se7+?
- Keys
- 1.Qf5!
- threat
- 2.Qf3#
- 2.e6#
- 1...Rxg6
- 2.Qf3#
- 1...d3
- 2.Qxd3#
- 2.e6#
- 1...Rc6
- 2.Qf3#
- 1...Re6
- 2.Qf3#
- 1...Rf6
- 2.Se7#
- 1...Rf7
- 2.Be6#
- 1...Bf4
- 2.Sxf4#
- 1...Bf6
- 2.Sf4#
- 2.Qf3#
- 2.exf6#
- 1...Be7
- 2.Sf4#
- 2.e6#
- 1...Be6
- 2.Qf3#
- 1...Sc4
- 2.Qf3#
- 1...Sc5
- 2.e6#
- threat
- 1.Qf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- R(g);N_GUARD,P_SPINR(i)::QAB1(A),XR(g)
- R(g);P_SPINR(i)::S(F)
- R(g);P_SPINR(i),XS(G)::S(F)
- R(i);N_GUARD,P_SPINR(g)::S(F),XR(i)
- R(i);P_SPINR(g)::QAB1(A)
- R(i);N_GUARD,P_PINB(I),XR(J)::S(F)
- B(e);N_GUARD::S(G),XB(e)
- B(e);N_GUARD::S(G)
- B(e);N_GUARD,XR(J)::S(G)
- S(f);OGATE::P(C),XS(f)
- P(b);OGATEB::QAR2(A),XP(b)
- P(c);N_GUARD::S(F)
- Tries
- Try
- S(G);CHECK
- Vars
- K(d);P_SPINR(i),S_FLIGHT::QAB1(A)
- R(i);P_SPINR(g),XS(G)::QAB1(A)
- Refutation
- B(e);XS(G)
- Try
- B(I);CHECK,XS(h)
- Refutation
- R(i);CHECK,P_SPINR(g),XB(I)
- Try
- B(I);XR(i)
- Threat
- DUALS(2)
- Vars
- B(e);N_GUARD,XR(J)::S(G)
- S(h);XR(J)::S(F)
- P(b);OGATEB::QAR2(A),XP(b)
- S(f);::B(I)
- Refutation
- S(f);CHECK,XB(I)
- Try
- R(J);P_PINR(g),XR(i)
- Threat
- DUALS(3)
- Vars
- R(g);N_SPINR(g),XR(J)::QAB1(A)
- P(b);OGATEB::QAR2(A),XP(b)
- Refutation
- S(f);CHECK,N_SPINR(g),XR(J)
- Try
- P(B);XP(a)
- Threat
- DUALS(2)
- Vars
- B(e);XP(B)::QAB(A)
- P(b);OGATEB,XP(B)::QAR2(A)
- B(e);N_GUARD::S(G)
- Refutation
- S(h);
- Try
- P(B);
- Threat
- QAB(A)
- Vars
- B(e);N_GUARD::S(G)
- R(g);P_SPINR(i)::S(F)
- S(h);N_GUARD::QAR1(A),XS(h)
- Refutation
- P(a);
- Try
- Actual
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(g);P_SPINR(i),XS(G)::QAB(A)
- R(g);P_SPINR(i)::QAB(A)
- R(g);P_SPINR(i),S_CUTB(e)::S(G)
- R(i);OGATE,P_SPINR(g)::B(I)
- B(e);N_GUARD::S(G),XB(e)
- B(j);::QAB(A)
- S(f);::QAB(A)
- S(h);::QAR(A)+P(E)
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