MESON Chess Problem Database
Problem Display
PID: 172001 (1Nqb1n1n/1bppkPQ1/2p1p1P1/K4P1r/7N/6B1/B7/3RR3 w - - 0 1)
Apro, Laszlo
Schach-Echo, 1972
#2
11 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rxh4
- 2.Bxh4#
- 2.f6#
- 1...Rxf5+
- 2.Sxf5#
- 1...Rh6
- 2.f6#
- 1...Rh7
- 2.f6#
- 1...Sfxg6
- 2.f8Q#
- 1...Sh7
- 2.f8Q#
- 1...Sxf7
- 2.Qxf7#
- 1...c5
- 2.f6#
- 1...e5
- 2.f6#
- 1...d5
- 2.f6#
- 1...Rxh4
- Tries
- 1.Kb4?
- threat
- 2.f6#
- 1...Rxh4+
- 2.Bxh4#
- 1...Rxf5
- 2.Sxf5#
- 1...Sxf7
- 2.Qxf7#
- 1...Sh7
- 2.f8Q#
- 1...c5+!
- threat
- 1.Bd5?
- threat
- 2.f6#
- 1...Rxf5
- 2.Sxf5#
- 1...Sxf7
- 2.Qxf7#
- 1...Sh7
- 2.f8Q#
- 1...e5!
- threat
- 1.Be5?
- threat
- 2.Bf6#
- 2.Qf6#
- 2.f6#
- 1...Sfxg6
- 2.Bf6#
- 2.f6#
- 2.f8Q#
- 1...Sxf7
- 2.Qxf7#
- 1...exf5
- 2.Bd6#
- 2.Bf6#
- 2.Qf6#
- 1...Sh7
- 2.f8Q#
- 1...d5
- 2.Qf6#
- 2.f6#
- 1...Rxf5!
- threat
- 1.Rd5?
- threat
- 2.f6#
- 1...Rxf5
- 2.Sxf5#
- 1...Sxf7
- 2.Qxf7#
- 1...Sh7
- 2.f8Q#
- 1...e5!
- threat
- 1.Rxd7+?
- 1...Sxd7
- 2.Rxe6#
- 2.f8Q#
- 1...Qxd7!
- 1...Sxd7
- 1.Re5?
- threat
- 2.f6#
- 1...Rxf5
- 2.Sxf5#
- 1...Sxf7
- 2.Qxf7#
- 1...Sh7
- 2.f8Q#
- 1...d5!
- threat
- 1.Rxe6+?
- 1...Sxe6
- 2.f8Q#
- 1...dxe6!
- 1...Sxe6
- 1.Kb4?
- Keys
- 1.Ka4!
- threat
- 2.f6#
- 1...Rxh4+
- 2.Bxh4#
- 1...Rxf5
- 2.Sxf5#
- 1...Sxf7
- 2.Qxf7#
- 1...Sh7
- 2.f8Q#
- threat
- 1.Ka4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(a);CHECK,XP(G)::S(E),XR(a)
- R(a);N_PINP(G)::P(G)
- S(j);OGATE,XP(H)::P=Q
- S(j);OGATE::P=Q
- S(k);OGATE,P_SPINS(k),XP(I)::QAR1(J),XS(k)
- P(b);N_PINP(G)::P(G)
- P(c);N_PINP(G)::P(G)
- P(f);N_PINP(G)::P(G)
- Tries
- Try
- K(F);N_SPINP(G),S_FLIGHT
- Threat
- P(G)
- Vars
- R(a);CHECK,OGATE,XS(E)::B(D),XR(a)
- R(a);XP(G)::S(E),XR(a)
- S(k);OGATE,P_SPINS(k),XP(I)::QAR1(J),XS(k)
- S(j);OGATE::P=Q
- Refutation
- P(b);CHECK
- Try
- B(C);N_SPINP(G)
- Threat
- P(G)
- Vars
- R(a);P_PINB(C),XP(G)::S(E),XR(a)
- S(k);OGATE,P_SPINS(k),XP(I)::QAR1(J),XS(k)
- S(j);OGATE::P=Q
- Refutation
- P(c);
- Try
- B(D);N_PINP(c),N_SPINP(G)
- Threat
- DUALS(3)
- Vars
- S(k);OGATE,P_SPINS(k),XP(I)::QAR1(J),XS(k)
- S(j);OGATE::P=Q
- Refutation
- R(a);P_PINB(D),XP(G)
- Try
- R(A);N_SPINP(G)
- Threat
- P(G)
- Vars
- R(a);P_PINR(A),XP(G)::S(E),XR(a)
- S(k);OGATE,P_SPINS(k),XP(I)::QAR1(J),XS(k)
- S(j);OGATE::P=Q
- Refutation
- P(c);
- Try
- R(A);CHECK,XP(f)
- Refutation
- Q(h);XR(A)
- Try
- R(B);N_SPINP(G)
- Threat
- P(G)
- Vars
- R(a);P_PINR(B),XP(G)::S(E),XR(a)
- S(k);OGATE,P_SPINS(k),XP(I)::QAR1(J),XS(k)
- S(j);OGATE::P=Q
- Refutation
- P(f);
- Try
- R(B);CHECK,XP(c)
- Vars
- S(j);OGATE,XR(B)::P=Q
- Refutation
- P(f);XR(B)
- Try
- Actual
- K(F);N_SPINP(G),P-FLIGHT
- Threat
- P(G)
- Vars
- R(a);CHECK,OGATE,XS(E)::B(D),XR(a)
- R(a);XP(G)::S(E),XR(a)
- S(k);OGATE,P_SPINS(k),XP(I)::QAR1(J),XS(k)
- S(j);OGATE::P=Q
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