MESON Chess Problem Database
Problem Display
PID: 135290 (4n3/1BPR4/1N2k2N/1q2B1K1/QrpP4/2p1R1P1/4n3/3r4 w - - 0 1)
Schatz, Max
Die Schwalbe, 2009
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Qxa4
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Bd5#
- 1...Qa6
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Bd5#
- 1...Qxd7
- 2.Bf4#
- 2.Qxd7#
- 1...Qd5
- 2.Bxd5#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qxb6
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Bd5#
- 1...Qxa4
- Tries
- 1.Sd5?
- threat
- 2.Re7#
- 1...Kxd7
- 2.c8Q#
- 1...Qxd7
- 2.Bf4#
- 1...Qxd5
- 2.Bxd5#
- 1...Qxb7
- 2.Bf4#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Qc5
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Qc6!
- threat
- 1.Sf5?
- threat
- 2.Re7#
- 1...Qxd7
- 2.Qxd7#
- 1...Qc5!
- threat
- 1.Sg8?
- threat
- 2.Re7#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qxd7
- 2.Qxd7#
- 1...Qc5!
- threat
- 1.Rd5?
- threat
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Ke7
- 2.Bd6#
- 2.Bg7#
- 1...Qxd5
- 2.Qxe8#
- 1...Rxd4
- 2.Bxd4#
- 1...Sxg3
- 2.Bxg3#
- 1...Sf4
- 2.Bxf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bxf6#
- 1...Sg7
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bxg7#
- 1...Rd3!
- threat
- 1.Qxb5?
- threat
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Bd5#
- 2.Qd5#
- 1...Rxd4
- 2.Bxd4#
- 1...Sxg3
- 2.Bxg3#
- 2.Bd5#
- 2.Qd5#
- 1...Sxc7
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bxc7#
- 2.Bg7#
- 2.Bh8#
- 2.Qc6#
- 1...Rd3
- 2.Bd5#
- 2.Qd5#
- 1...Sf4
- 2.Bxf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Sd6
- 2.Bxd6#
- 2.Bd5#
- 2.Qd5#
- 1...Sf6
- 2.Bxf6#
- 2.Qc6#
- 1...Sg7
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bxg7#
- 2.Bd5#
- 2.Qc6#
- 2.Qd5#
- 1...Rxb5!
- threat
- 1.Qxb4?
- threat
- 2.Re7#
- 2.Qe7#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qxd7
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Qxb4
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Bd5#
- 1...Sd6
- 2.Qxd6#
- 1...Qc5!
- threat
- 1.c8S?
- threat
- 2.Re7#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qxd7
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 2.Qxd7#
- 1...Qc5!
- threat
- 1.Sd5?
- Keys
- 1.Sf7!
- threat
- 2.Sd8#
- 1...Qxe5+
- 2.Rxe5#
- 1...Qxd7
- 2.Qxd7#
- threat
- 1.Sf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(f);N_GUARD::B(I),XQ(f)
- Q(f);CHECK,OGATE,P_SPINQ(f),XB(E)::R1(A),XQ(f)
- Tries
- Try
- S(G);N_SPINB(E)
- Threat
- R1(K)
- Vars
- K(g);P_SPINQ(f),S_FLIGHT,XR(K)::P=Q
- Q(f);XR(K)::R(A)+B(E)
- Q(f);OGATE,P_PINB(E),XS(G)::B(I),XQ(f)
- Refutation
- Q(f);
- Try
- S(H);N_SPINB(E)
- Threat
- R1(K)
- Vars
- Q(f);OGATE,XR(K)::QAB1(C),XQ(f)
- Refutation
- Q(f);
- Try
- S(H);
- Threat
- R1(K)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XB(E)::R1(A),XQ(f)
- Q(f);N_PINB(E),OGATE,XR(K)::QAB1(C),XQ(f)
- Refutation
- Q(f);
- Try
- R(K);N_SPINB(E)
- Threat
- DUALS(5)
- Vars
- Q(f);OGATE,P_PINB(E),XR(K)::QAR2(C),XS(h)
- R(a);OGATE,XP(D)::R(A)+B(E),XR(a)
- S(b);OGATE,XP(B)::R(A)+B(E),XS(b)
- S(h);::R(A)+B(E),XS(h)
- Refutation
- R(a);
- Try
- Q(C);N_SPINB(E),XQ(f)
- Threat
- DUALS(7)
- Vars
- R(a);OGATE,XP(D)::R(A)+B(E),XR(a)
- Refutation
- R(d);P_PINB(E),XQ(C)
- Try
- Q(C);XR(d)
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XB(E)::R1(A),XQ(f)
- S(h);N_GUARD::QAR1(C),XS(h)
- Refutation
- Q(f);
- Try
- P(J);
- Threat
- R1(K)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XB(E)::R1(A),XQ(f)
- Refutation
- Q(f);
- Try
- Actual
- S(H);
- Threat
- S(H)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XB(E)::R1(A),XQ(f)
- Q(f);N_PINB(E),OGATE,XR(K)::QAB1(C),XQ(f)
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