MESON Chess Problem Database
Problem Display
PID: 22093 (2Knrb2/1pRPk1p1/1Pp1P1P1/5R1P/B7/7p/7Q/8 w - - 0 1)
Andrade, Barry Jack da Costa
2nd Place, Good Companions, 1924
#2
10 + 8
| 3098 | FIDE Album (1914-1944) (I) | 1971 |
SOLUTION
- SOUND
- Sets
- 1...Kxe6
- 2.Qe5#
- 1...Sxe6+
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.d8S#
- 1...c5
- 2.dxe8Q#
- 2.dxe8R#
- 1...Kxe6
- Tries
- 1.Bd1?
- 1...Sxe6+
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.d8S#
- 1...Kxe6
- 2.Qe5#
- 1...c5!
- 1...Sxe6+
- 1.Bc2?
- 1...Sxe6+
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.d8S#
- 1...Kxe6
- 2.Qe5#
- 1...c5!
- 1...Sxe6+
- 1.Bb3?
- 1...Sxe6+
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...c5!
- 1...Sxe6+
- 1.Bb5?
- 1...Sxe6+
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.d8S#
- 1...Kxe6
- 2.Qe5#
- 1...c5
- 2.dxe8Q#
- 2.dxe8R#
- 1...cxb5!
- 1...Sxe6+
- 1.Bxc6?
- threat
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sxc6+
- 2.d8S#
- 1...Sxe6+
- 2.dxe8Q#
- 2.dxe8R#
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.dxe8Q#
- 2.dxe8R#
- 2.d8S#
- 1...Kxe6
- 2.Qe5#
- 1...bxc6!
- threat
- 1.Rf1?
- 1...Sxe6+
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.d8S#
- 1...c5
- 2.dxe8Q#
- 2.dxe8R#
- 1...Kxe6!
- 1...Sxe6+
- 1.Rf2?
- 1...Sxe6+
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.d8S#
- 1...c5
- 2.dxe8Q#
- 2.dxe8R#
- 1...Kxe6!
- 1...Sxe6+
- 1.Rf3?
- 1...Sxe6+
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.d8S#
- 1...c5
- 2.dxe8Q#
- 2.dxe8R#
- 1...Kxe6!
- 1...Sxe6+
- 1.Rf7+?
- 1...Kxe6
- 2.Bb3#
- 1...Sxf7+!
- 1...Kxe6
- 1.Rxb7?
- 1...Sxe6+
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.d8S#
- 1...Kxe6
- 2.Qe5#
- 1...c5
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sxb7+!
- 1...Sxe6+
- 1.Qg3?
- 1...Sxe6+
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.d8S#
- 1...Kxe6
- 2.Qe5#
- 1...c5
- 2.dxe8Q#
- 2.dxe8R#
- 1...h2!
- 1...Sxe6+
- 1.Qf4?
- 1...Sxe6+
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.d8S#
- 1...Kxe6
- 2.Qe5#
- 1...c5
- 2.dxe8Q#
- 2.dxe8R#
- 1...h2!
- 1...Sxe6+
- 1.Qe5?
- 1...Sxe6+
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...Sf7+
- 2.d8Q#
- 2.d8S#
- 2.d8B#
- 2.d8R#
- 1...c5
- 2.dxe8Q#
- 2.dxe8S#
- 2.dxe8B#
- 2.dxe8R#
- 1...h2!
- 1...Sxe6+
- 1.Qa2?
- 1...Sxe6+
- 2.d8Q#
- 1...Sf7+
- 2.d8Q#
- 2.d8R#
- 1...Kd6
- 2.dxe8S#
- 1...c5
- 2.dxe8S#
- 1...h2!
- 1...Sxe6+
- 1.Qe2?
- 1...Sxe6+
- 2.d8Q#
- 2.d8R#
- 1...Sf7+
- 2.d8Q#
- 2.d8R#
- 1...Kd6
- 2.dxe8S#
- 1...c5
- 2.dxe8S#
- 1...h2!
- 1...Sxe6+
- 1.h6?
- 1...Sxe6+
- 2.d8Q#
- 2.d8B#
- 1...Sf7+
- 2.d8S#
- 1...Kxe6
- 2.Qe5#
- 1...c5
- 2.dxe8Q#
- 2.dxe8R#
- 1...gxh6!
- 1...Sxe6+
- 1.dxe8S+?
- 1...Kxe6
- 2.Re5#
- 2.Qe5#
- 1...Kxe8!
- 1...Kxe6
- 1.dxe8B+?
- 1...Kxe6
- 2.Qe5#
- 1...Kxe8!
- 1...Kxe6
- 1.Bd1?
- Keys
- 1.Re5!
- 1...Sxe6+
- 2.d8Q#
- 1...Sf7+
- 2.d8Q#
- 1...Kd6
- 2.dxe8S#
- 1...Kf6
- 2.dxe8S#
- 1...c5
- 2.dxe8S#
- 1...Sxe6+
- 1.Re5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- K(d);OGATEB,P-FLIGHT,XP(F)::QAR1(A)
- S(f);CHECK,OGATE,SBLOCK,XP(F)::P=Q
- S(f);CHECK,OGATE::P=S
- P(b);::PXR(g)=Q
- Tries
- Try
- B(B);
- Vars
- S(f);CHECK,OGATE,SBLOCK,XP(F)::P=Q
- S(f);CHECK,OGATE::P=S
- K(d);OGATEB,P-FLIGHT,XP(F)::QAR1(A)
- Refutation
- P(b);
- Try
- B(B);
- Vars
- S(f);CHECK,OGATE,SBLOCK,XP(F)::P=Q
- S(f);CHECK,OGATE::P=S
- K(d);OGATEB,P-FLIGHT,XP(F)::QAR1(A)
- Refutation
- P(b);
- Try
- B(B);
- Vars
- S(f);CHECK,OGATE,XP(F)::P=Q
- Refutation
- P(b);
- Try
- B(B);
- Vars
- S(f);CHECK,OGATE,SBLOCK,XP(F)::P=Q
- S(f);CHECK,OGATE::P=S
- K(d);OGATEB,P-FLIGHT,XP(F)::QAR1(A)
- P(b);::PXR(g)=Q
- Refutation
- P(b);XB(B)
- Try
- B(B);XP(b)
- Threat
- PXR(g)=Q
- Vars
- S(f);CHECK,OGATE,XB(B)::P=S
- K(d);OGATEB,P-FLIGHT,XP(F)::QAR1(A)
- Refutation
- P(c);XB(B)
- Try
- R(C);
- Vars
- S(f);CHECK,OGATE,SBLOCK,XP(F)::P=Q
- S(f);CHECK,OGATE::P=S
- P(b);::PXR(g)=Q
- Refutation
- K(d);P-FLIGHT,XP(F)
- Try
- R(C);
- Vars
- S(f);CHECK,OGATE,SBLOCK,XP(F)::P=Q
- S(f);CHECK,OGATE::P=S
- P(b);::PXR(g)=Q
- Refutation
- K(d);P-FLIGHT,XP(F)
- Try
- R(C);
- Vars
- S(f);CHECK,OGATE,SBLOCK,XP(F)::P=Q
- S(f);CHECK,OGATE::P=S
- P(b);::PXR(g)=Q
- Refutation
- K(d);P-FLIGHT,XP(F)
- Try
- R(C);CHECK
- Vars
- K(d);P-FLIGHT,XP(F)::B(B)
- Refutation
- S(f);CHECK,XR(C)
- Try
- R(H);XP(c)
- Vars
- S(f);CHECK,OGATE,SBLOCK,XP(F)::P=Q
- S(f);CHECK,OGATE::P=S
- K(d);OGATEB,P-FLIGHT,XP(F)::QAR1(A)
- P(b);::PXR(g)=Q
- Refutation
- S(f);CHECK,XR(H)
- Try
- Q(A);
- Vars
- S(f);CHECK,OGATE,SBLOCK,XP(F)::P=Q
- S(f);CHECK,OGATE::P=S
- K(d);OGATEB,P-FLIGHT,XP(F)::QAR1(A)
- P(b);::PXR(g)=Q
- Refutation
- P(a);
- Try
- Q(A);
- Vars
- S(f);CHECK,OGATE,SBLOCK,XP(F)::P=Q
- S(f);CHECK,OGATE::P=S
- K(d);OGATEB,P-FLIGHT,XP(F)::QAR1(A)
- P(b);::PXR(g)=Q
- Refutation
- P(a);
- Try
- Q(A);
- Refutation
- P(a);
- Try
- Q(A);
- Vars
- S(f);CHECK,OGATE,XP(F)::P=Q
- S(f);CHECK,OGATE::P=Q
- K(d);S_FLIGHT::PXR(g)=S
- P(b);::PXR(g)=S
- Refutation
- P(a);
- Try
- Q(A);
- Vars
- S(f);CHECK,OGATE,P_SPINS(f),XP(F)::P=Q
- S(f);CHECK,OGATE::P=Q
- K(d);S_FLIGHT::PXR(g)=S
- P(b);::PXR(g)=S
- Refutation
- P(a);
- Try
- P(D);
- Vars
- S(f);CHECK,OGATE,SBLOCK,XP(F)::P=Q
- S(f);CHECK,OGATE::P=S
- K(d);OGATEB,P-FLIGHT,XP(F)::QAR1(A)
- P(b);::PXR(g)=Q
- Refutation
- P(e);XP(D)
- Try
- P(I);CHECK,XR(g)
- Refutation
- K(d);P-FLIGHT,P_SPINP(b),XS(I)
- Try
- P(I);CHECK,XR(g)
- Vars
- K(d);P-FLIGHT,XP(F)::QAR1(A)
- Refutation
- K(d);P-FLIGHT,P_SPINP(b),XB(I)
- Try
- Actual
- R(C);
- Vars
- S(f);CHECK,OGATE,P_SPINS(f),XP(F)::P=Q
- S(f);CHECK,OGATE::P=Q
- K(d);S_FLIGHT::PXR(g)=S
- P(b);::PXR(g)=S
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