MESON Chess Problem Database
Problem Display
PID: 134621 (7b/2n1n3/5R2/3pkPQ1/3p4/3BqPK1/4RP2/8 w - - 0 1)
Ellerman, Arnoldo
The Field, 1966
(First published on Thu Jan 6 1966)
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...Qxe2
- 2.f4#
- 1...Qe4
- 2.f4#
- 1...Bxf6
- 2.Qf4#
- 1...Sb5
- 2.Re6#
- 1...Sa6
- 2.Re6#
- 1...Se6
- 2.Rxe6#
- 1...Sa8
- 2.Re6#
- 1...Se8
- 2.Re6#
- 1...Sxf5+
- 2.Qxf5#
- 1...Sg6
- 2.fxg6#
- 1...Qxe2
- Tries
- 1.Kg2?
- threat
- 2.f4#
- 1...Bxf6
- 2.Qg3#
- 1...Se6
- 2.Rxe6#
- 1...Sg6
- 2.fxg6#
- 1...Qe4!
- threat
- 1.Kg4?
- threat
- 2.f4#
- 1...Bxf6
- 2.Qf4#
- 1...Se6
- 2.Rxe6#
- 1...Sg6
- 2.fxg6#
- 1...Qxe2!
- threat
- 1.Kh4?
- threat
- 2.f4#
- 1...Sxf5+
- 2.Qxf5#
- 1...Sg6+
- 2.fxg6#
- 1...Se6
- 2.Rxe6#
- 1...Bxf6!
- threat
- 1.Ra6?
- threat
- 2.Qf4#
- 1...Sxf5+
- 2.Qxf5#
- 1...Sxa6
- 2.Qxe7#
- 1...Se6
- 2.Rxe6#
- 1...Sg6
- 2.fxg6#
- 2.f6#
- 1...Sc6!
- threat
- 1.Rb6?
- threat
- 2.Qf4#
- 1...Sxf5+
- 2.Qxf5#
- 1...Se6
- 2.Rxe6#
- 1...Sg6
- 2.fxg6#
- 2.f6#
- 1...Sc6!
- threat
- 1.Rc6?
- threat
- 2.Qf4#
- 1...Sxf5+
- 2.Qxf5#
- 1...Se6
- 2.Rxe6#
- 1...Sg6
- 2.fxg6#
- 2.f6#
- 1...Sxc6!
- threat
- 1.Rg6?
- threat
- 2.Qf4#
- 1...Sxf5+
- 2.Qxf5#
- 1...Se6
- 2.Rxe6#
- 1...Sxg6!
- threat
- 1.Rh6?
- threat
- 2.Qf4#
- 1...Sxf5+
- 2.Qxf5#
- 1...Se6
- 2.Rxe6#
- 1...Sg6!
- threat
- 1.Qxe3+?
- 1...Kxf6
- 2.Qxe7#
- 1...dxe3!
- 1...Kxf6
- 1.fxe3?
- threat
- 2.f4#
- 1...Sxf5+
- 2.Qxf5#
- 1...Bxf6
- 2.Qf4#
- 1...Se6
- 2.Rxe6#
- 1...Sg6
- 2.fxg6#
- 1...dxe3!
- threat
- 1.Kg2?
- Keys
- 1.Kh2!
- threat
- 2.f4#
- 1...Bxf6
- 2.Qg3#
- 1...Se6
- 2.Rxe6#
- 1...Sg6
- 2.fxg6#
- threat
- 1.Kh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- Q(a);N_PINP(D),N_SPINQ(a),XR(A)::P(D)
- Q(a);N_PINP(D)::P(D)
- B(g);SBLOCK,XR(H)::QAB1(G)
- S(e);N_GUARD::R1(H)
- S(e);N_GUARD::R1(H),XS(e)
- S(f);CHECK,OGATE,P_SPINS(f),XP(F)::QAR1(G),XS(f)
- S(f);OGATE::QAR(G)+P(F),XS(f)
- Tries
- Try
- K(E);N_SPINP(D),P-FLIGHT
- Threat
- P(D)
- Vars
- B(g);SBLOCK,XR(H)::QAB(G)
- S(e);N_GUARD::R1(H),XS(e)
- S(f);OGATE::QAR(G)+P(F),XS(f)
- Refutation
- Q(a);P_PINP(D)
- Try
- K(E);N_SPINP(D),P-FLIGHT
- Threat
- P(D)
- Vars
- B(g);SBLOCK,XR(H)::QAB1(G)
- S(e);N_GUARD::R1(H),XS(e)
- S(f);OGATE::QAR(G)+P(F),XS(f)
- Refutation
- Q(a);N_SPINQ(a),P_PINP(D),XR(A)
- Try
- K(E);N_SPINP(D),S_FLIGHT
- Threat
- P(D)
- Vars
- S(f);CHECK,OGATE,P_SPINS(f),XP(F)::QAR1(G),XS(f)
- S(f);CHECK,OGATE::QAR(G)+P(F),XS(f)
- S(e);N_GUARD::R1(H),XS(e)
- Refutation
- B(g);P_PINQ(G),XR(H)
- Try
- R(H);
- Threat
- QAB1(G)
- Vars
- S(f);CHECK,OGATE,P_SPINS(f),XP(F)::QAR1(G),XS(f)
- S(e);N_GUARD,XR(H)::QAR2(G),XS(f)
- S(e);N_GUARD::R1(H),XS(e)
- Refutation
- S(f);
- Try
- R(H);
- Threat
- QAB1(G)
- Vars
- S(f);CHECK,OGATE,P_SPINS(f),XP(F)::QAR1(G),XS(f)
- S(e);N_GUARD::R1(H),XS(e)
- Refutation
- S(f);
- Try
- R(H);
- Threat
- QAB1(G)
- Vars
- S(f);CHECK,OGATE,P_SPINS(f),XP(F)::QAR1(G),XS(f)
- S(e);N_GUARD::R1(H),XS(e)
- Refutation
- S(f);XR(H)
- Try
- R(H);
- Threat
- QAB1(G)
- Vars
- S(f);CHECK,OGATE,P_SPINS(f),XP(F)::QAR1(G),XS(f)
- S(e);N_GUARD::R1(H),XS(e)
- Refutation
- S(f);XR(H)
- Try
- R(H);
- Threat
- QAB1(G)
- Vars
- S(f);CHECK,OGATE,P_SPINS(f),XP(F)::QAR1(G),XS(f)
- S(e);N_GUARD::R1(H),XS(e)
- Refutation
- S(f);
- Try
- Q(G);CHECK,N_SPINP(D),XQ(a)
- Vars
- K(d);OGATE,S_FLIGHT,XR(H)::QAB1(G),XS(f)
- Refutation
- P(b);P_SPINP(b),XQ(G)
- Try
- P(B);N_SPINP(D),XQ(a)
- Threat
- P(D)
- Vars
- S(f);CHECK,OGATE,P_SPINS(f),XP(F)::QAR1(G),XS(f)
- B(g);SBLOCK,XR(H)::QAB1(G)
- S(e);N_GUARD::R1(H),XS(e)
- S(f);OGATE::QAR(G)+P(F),XS(f)
- Refutation
- P(b);P_SPINP(b),XP(B)
- Try
- Actual
- K(E);N_SPINP(D),S_FLIGHT
- Threat
- P(D)
- Vars
- B(g);SBLOCK,XR(H)::QAB(G)
- S(e);N_GUARD::R1(H),XS(e)
- S(f);OGATE::QAR(G)+P(F),XS(f)
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