MESON Chess Problem Database
Problem Display
PID: 235664 (1BK5/1P4pn/2k3rR/2P5/4N3/4Np2/1PR1Qp2/r5bB w - - 0 1)
Haring, Jacobus
Mat, 1978
#2
11 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Qa6#
- 1...Rc1
- 2.Qa6#
- 1...Rd1
- 2.Qa6#
- 1...Re1
- 2.Qa6#
- 1...Rf1
- 2.Qa6#
- 1...Ra6
- 2.Qxa6#
- 1...Ra8
- 2.bxa8Q#
- 2.bxa8B#
- 1...Rd6
- 2.Rxd6#
- 1...Re6
- 2.Rxe6#
- 1...Rb1
- Tries
- 1.Sd6?
- threat
- 2.Bxf3#
- 2.Qxf3#
- 2.Qb5#
- 1...Rxd6
- 2.Bxf3#
- 2.Rxd6#
- 1...f1B
- 2.Bxf3#
- 2.Qxf3#
- 1...f1R
- 2.Qb5#
- 1...Rd1
- 2.Qb5#
- 2.Qa6#
- 1...Ra4
- 2.Qb5#
- 1...Ra5
- 2.Bxf3#
- 2.Qxf3#
- 1...Rg2
- 2.Qxf3#
- 2.Qb5#
- 1...Rg3
- 2.Qb5#
- 1...Rg4
- 2.Qb5#
- 1...Rg5
- 2.Qb5#
- 1...Re6
- 2.Qb5#
- 1...Rf6
- 2.Qb5#
- 1...Sg5
- 2.Qb5#
- 1...Sf6
- 2.Qb5#
- 1...f1Q!
- threat
- 1.Bxf3?
- threat
- 2.Sd2#
- 2.Sxf2#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...f1Q
- 2.Sf2#
- 1...f1S
- 2.Sd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...f1B
- 2.Sd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...f1R
- 2.Sf2#
- 1...Rd1
- 2.Sd2#
- 2.Qa6#
- 1...Rd6
- 2.Sd2#
- 2.Sxf2#
- 2.Sg3#
- 2.Sg5#
- 2.Sxd6#
- 2.Rxd6#
- 1...Re6
- 2.Sd2#
- 2.Sxf2#
- 2.Sg3#
- 2.Sg5#
- 2.Rxe6#
- 1...Rf6
- 2.Sd2#
- 2.Sxf2#
- 2.Sg3#
- 2.Sg5#
- 2.Sxf6#
- 1...Sg5
- 2.Sxg5#
- 1...Sf6
- 2.Sxf6#
- 1...Ra4!
- threat
- 1.Bf4?
- threat
- 2.b8S#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...fxe2!
- threat
- 1.Be5?
- threat
- 2.b8S#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...fxe2!
- threat
- 1.Bd6?
- threat
- 2.b8S#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...fxe2!
- threat
- 1.Ba7?
- threat
- 2.b8S#
- 1...fxe2
- 2.Sc3#
- 1...Bh2!
- threat
- 1.Bc7?
- threat
- 2.b8S#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...fxe2!
- threat
- 1.b4?
- threat
- 2.b5#
- 1...fxe2
- 2.Sc3#
- 1...Rb1
- 2.Qa6#
- 1...Ra5!
- threat
- 1.Sd6?
- Keys
- 1.Bg3!
- threat
- 2.b8S#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...fxe2
- 2.Sd6#
- threat
- 1.Bg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- R(a);N_GUARD::QAR2(D)
- R(a);N_GUARD::QAR2(D),XR(a)
- R(a);OGATE,P_PINB(J)::PXR(a)=Q
- R(f);OGATE::R1(H),XR(f)
- R(f);OGATE::R(H),XR(f)
- Tries
- Try
- S(F);N_PINR(f),P_PINP(d)
- Threat
- DUALS(3)
- Vars
- P(c);::QAB1(D)
- R(a);::QAB1(D)
- R(f);::QAB1(D)
- S(h);::QAB1(D)
- Refutation
- P(c);
- Try
- B(A);XP(d)
- Threat
- DUALS(6)
- Vars
- P(c);::B(A)+S(F)
- S(h);::B(A)+S(F),XS(h)
- S(h);N_SPINR(f)::B(A)+S(F),XS(h)
- Refutation
- R(a);
- Try
- B(J);
- Threat
- P=S
- Vars
- R(a);CHECK,OGATE::PXR(a)=Q
- Refutation
- P(d);XQ(D)
- Try
- B(J);
- Threat
- P=S
- Vars
- R(a);CHECK,OGATE::PXR(a)=Q
- Refutation
- P(d);XQ(D)
- Try
- B(J);N_PINR(f)
- Threat
- P=S
- Vars
- R(a);CHECK,OGATE::PXR(a)=Q
- Refutation
- P(d);XQ(D)
- Try
- B(J);
- Threat
- P=S
- Vars
- P(d);XQ(D)::B(A)+S(F)
- Refutation
- B(b);
- Try
- B(J);
- Threat
- P=S
- Vars
- R(a);CHECK,OGATE::PXR(a)=Q
- Refutation
- P(d);XQ(D)
- Try
- P(B);
- Threat
- P(B)
- Vars
- P(d);XQ(D)::B(A)+S(F)
- R(a);N_GUARD::QAR2(D)
- Refutation
- R(a);
- Try
- Actual
- B(J);
- Threat
- P=S
- Vars
- R(a);CHECK,OGATE::PXR(a)=Q
- P(d);XQ(D)::B(A)+S(F)
Developed and maintained by Brian Stephenson.
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