MESON Chess Problem Database
Problem Display
PID: 239172 (K7/5Pp1/2k1B1Q1/1p1Np3/1B6/1pNPR2b/1P4r1/2R2r2 w - - 0 1)
Hermanson, Halvar
Sachove umeni (Ceskoslovensky sach), 1961
#2
11 + 8
| 1099 | WCSC | 1990 |
| 5396 | World Chess Solving Championship 1977-1996 | 1997 |
| 14538 | Palman | 2009 |
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxc1
- 2.Bg4#
- 1...Rd1
- 2.Bg4#
- 1...Re1
- 2.Bg4#
- 1...Rfg1
- 2.Bg4#
- 1...Rh1
- 2.Bg4#
- 1...Rff2
- 2.Se2#
- 1...Rf3
- 2.Se2#
- 1...Rf5
- 2.Se2#
- 1...Rf6
- 2.Se2#
- 1...Rxf7
- 2.Se2#
- 1...Rgg1
- 2.Sd1#
- 1...Rxb2
- 2.Bf5#
- 1...Rc2
- 2.Bf5#
- 1...Rd2
- 2.Bf5#
- 1...Re2
- 2.Bf5#
- 1...Rgf2
- 2.Bf5#
- 1...Rh2
- 2.Bf5#
- 1...Rg3
- 2.Sd1#
- 1...Rg5
- 2.Sd1#
- 1...Rxg6
- 2.Sd1#
- 1...Bg4
- 2.Bf5#
- 1...Bxe6
- 2.Qxe6#
- 1...Rxc1
- Tries
- 1.Sxb5+?
- 1...Rxc1
- 2.Sa7#
- 1...Rc2
- 2.Sa7#
- 1...Kxb5!
- 1...Rxc1
- 1.Ra1?
- threat
- 2.Ra6#
- 1...Bxe6
- 2.Qxe6#
- 1...Rxa1+!
- threat
- 1.Ree1?
- threat
- 2.Se2#
- 1...Rxe1
- 2.Bg4#
- 1...Rxb2
- 2.Bf5#
- 1...Bxe6
- 2.Qxe6#
- 1...Rc2
- 2.Bf5#
- 1...Rd2
- 2.Bf5#
- 1...Re2
- 2.Sxe2#
- 2.Bf5#
- 1...Rg4
- 2.Se4#
- 1...Rf4!
- threat
- 1.Re2?
- threat
- 2.Sd1#
- 1...Rxc1
- 2.Bg4#
- 1...Rxe2
- 2.Bf5#
- 1...Bxe6
- 2.Qxe6#
- 1...Rf4
- 2.Se4#
- 1...Rd1
- 2.Sxd1#
- 2.Bg4#
- 1...Rg4!
- threat
- 1.Rf3?
- threat
- 2.Bg4#
- 1...Rxf3
- 2.Se2#
- 1...Rxg6
- 2.Sd1#
- 1...Bxe6
- 2.Qxe6#
- 1...Rg4
- 2.Bxg4#
- 1...Rg5
- 2.Sd1#
- 1...Bg4
- 2.Bxg4#
- 2.Bf5#
- 1...Bf5!
- threat
- 1.Re4?
- 1...Rxc1
- 2.Bg4#
- 1...Rxf7
- 2.Se2#
- 1...Rxb2
- 2.Bf5#
- 1...Rxg6
- 2.Sd1#
- 1...Bxe6
- 2.Qxe6#
- 1...Rf4
- 2.Se2#
- 1...Rd1
- 2.Bg4#
- 1...Re1
- 2.Bg4#
- 1...Rfg1
- 2.Bg4#
- 1...Rh1
- 2.Bg4#
- 1...Rff2
- 2.Se2#
- 1...Rf3
- 2.Se2#
- 1...Rf5
- 2.Se2#
- 1...Rf6
- 2.Se2#
- 1...Rgg1
- 2.Sd1#
- 1...Rc2
- 2.Bf5#
- 1...Rd2
- 2.Bf5#
- 1...Re2
- 2.Bf5#
- 1...Rgf2
- 2.Bf5#
- 1...Rh2
- 2.Bf5#
- 1...Rg3
- 2.Sd1#
- 1...Rg4
- 2.Sd1#
- 1...Rg5
- 2.Sd1#
- 1...Bg4
- 2.Bf5#
- 1...Bf5!
- 1...Rxc1
- 1.Qf5?
- threat
- 2.Bd7#
- 1...Rxf5
- 2.Se2#
- 1...Bxf5!
- threat
- 1.f8Q?
- threat
- 2.Qge8#
- 2.Qc5#
- 2.Qd6#
- 2.Qc8#
- 2.Qfe8#
- 1...Rxg6
- 2.Sd1#
- 2.Qc5#
- 2.Qd6#
- 2.Qc8#
- 2.Qe8#
- 1...Bxe6
- 2.Qd6#
- 2.Qxe6#
- 2.Qc8#
- 2.Qfe8#
- 1...Rf7
- 2.Se2#
- 2.Qc5#
- 2.Qd6#
- 1...Rxf8+!
- threat
- 1.f8S?
- threat
- 2.Bd7#
- 2.Qe8#
- 1...Rxg6
- 2.Sd1#
- 1...Bxe6
- 2.Qxe6#
- 1...Rf6
- 2.Se2#
- 2.Qe8#
- 1...Rf7
- 2.Se2#
- 2.Bd7#
- 1...Rxf8+!
- threat
- 1.f8B?
- threat
- 2.Qe8#
- 1...Rxg6
- 2.Sd1#
- 1...Bxe6
- 2.Qxe6#
- 1...Rf7
- 2.Se2#
- 1...Rxf8+!
- threat
- 1.f8R?
- threat
- 2.Rc8#
- 2.Qe8#
- 1...Rxg6
- 2.Sd1#
- 2.Rc8#
- 1...Bxe6
- 2.Qxe6#
- 1...Rf7
- 2.Se2#
- 1...Rxf8+!
- threat
- 1.Sxb5+?
- Keys
- 1.Rg3!
- threat
- 2.Bf5#
- 1...Rxf7
- 2.Se2#
- 1...Rxg3
- 2.Sd1#
- 1...Bxe6
- 2.Qxe6#
- 1...Rf5
- 2.Se2#
- 2.Bxf5#
- 1...Rf6
- 2.Se2#
- 1...Bf5
- 2.Bxf5#
- threat
- 1.Rg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 18
- Sets
- R(a);N_GUARD,XR(A)::QAR(I)+B(H)
- R(a);N_GUARD::QAR(I)+B(H)
- R(a);N_GUARD::R(A)+S(C)
- R(a);N_GUARD,XP(J)::R(A)+S(C)
- R(b);N_GUARD::R(A)+S(C)
- R(b);N_GUARD,XP(B)::QAR(I)+B(H)
- R(b);N_GUARD::QAR(I)+B(H)
- R(b);N_GUARD,XQ(I)::R(A)+S(C)
- B(d);S_CUTR(b)::QAR(I)+B(H)
- B(d);OGATE,P_SPINB(d),XB(H)::QAR2(I),XB(d)
- Tries
- Try
- S(C);CHECK,XP(e)
- Vars
- R(a);XR(A)::S(C)
- R(b);P_SPINR(b)::S(C)
- Refutation
- K(g);S_FLIGHT,XS(C)
- Try
- R(A);
- Threat
- R(A)
- Vars
- B(d);OGATE,P_SPINB(d),XB(H)::QAR2(I),XB(d)
- Refutation
- R(a);CHECK,XR(A)
- Try
- R(E);
- Threat
- R(A)+S(C)
- Vars
- R(a);N_GUARD,XR(E)::QAR(I)+B(H)
- R(b);N_GUARD,XP(B)::QAR(I)+B(H)
- B(d);OGATE,P_SPINB(d),XB(H)::QAR2(I),XB(d)
- R(b);N_GUARD::QAR(I)+B(H)
- R(b);N_GUARD::R(A)+S(C)
- Refutation
- R(a);
- Try
- R(E);
- Threat
- R(A)+S(C)
- Vars
- R(a);N_GUARD,XR(A)::QAR(I)+B(H)
- R(b);N_GUARD,XR(E)::QAR(I)+B(H)
- B(d);OGATE,P_SPINB(d),XB(H)::QAR2(I),XB(d)
- R(a);N_GUARD::R(A)+S(C)
- Refutation
- R(b);
- Try
- R(E);
- Threat
- QAR(I)+B(H)
- Vars
- R(a);N_GUARD,XR(E)::R(A)+S(C)
- R(b);N_GUARD,XQ(I)::R(A)+S(C)
- B(d);OGATE,P_SPINB(d),XB(H)::QAR2(I),XB(d)
- R(b);::QAR(I)+B(H),XR(b)
- R(b);N_GUARD::R(A)+S(C)
- Refutation
- B(d);
- Try
- R(E);
- Vars
- R(a);N_GUARD,XR(A)::QAR(I)+B(H)
- R(a);N_GUARD,XP(J)::R(A)+S(C)
- R(b);N_GUARD,XP(B)::QAR(I)+B(H)
- R(b);N_GUARD,XQ(I)::R(A)+S(C)
- B(d);OGATE,P_SPINB(d),XB(H)::QAR2(I),XB(d)
- R(a);N_GUARD::R(A)+S(C)
- R(a);N_GUARD::QAR(I)+B(H)
- R(b);N_GUARD::R(A)+S(C)
- R(b);N_GUARD::QAR(I)+B(H)
- B(d);S_CUTR(b)::QAR(I)+B(H)
- Refutation
- B(d);
- Try
- Q(I);
- Threat
- B(H)
- Vars
- R(a);N_GUARD,XQ(I)::R(A)+S(C)
- Refutation
- B(d);XQ(I)
- Try
- P(J);
- Threat
- DUALS(5)
- Refutation
- R(a);CHECK,XQ(J)
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- R(b);N_GUARD,XQ(I)::R(A)+S(C)
- B(d);OGATE,P_SPINB(d),XB(H)::QAR2(I),XB(d)
- Refutation
- R(a);CHECK,XS(J)
- Try
- P(J);
- Threat
- QAB(I)
- Vars
- R(b);N_GUARD,XQ(I)::R(A)+S(C)
- B(d);OGATE,P_SPINB(d),XB(H)::QAR2(I),XB(d)
- R(a);N_GUARD::R(A)+S(C)
- Refutation
- R(a);CHECK,XB(J)
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- B(d);OGATE,P_SPINB(d),XB(H)::QAR2(I),XB(d)
- R(a);N_GUARD::R(A)+S(C)
- Refutation
- R(a);CHECK,XR(J)
- Try
- Actual
- R(E);
- Threat
- QAR(I)+B(H)
- Vars
- R(a);N_GUARD,XP(J)::R(A)+S(C)
- R(b);N_GUARD,XR(E)::R(A)+S(C)
- B(d);OGATE,P_SPINB(d),XB(H)::QAR2(I),XB(d)
- R(a);N_GUARD::R(A)+S(C)
- B(d);::QAR(I)+B(H),XB(d)
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