MESON Chess Problem Database
Problem Display
PID: 194798 (B1Nn4/1n6/p1p1pb2/3kpp1R/Q1R5/1N6/8/7K w - - 0 1)
Rains, Cyril George
The Observer, 1941
(First published on Sun Aug 3 1941)
#2
7 + 9
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Sa5
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...Sd6
- 2.Sb6#
- 2.Rc5#
- 1...Sf7
- 2.Qxc6#
- 1...f4
- 2.Rd4#
- 1...c5
- 2.Rxc5#
- 1...Sa5
- Tries
- 1.Bxb7?
- threat
- 2.Rc5#
- 1...Sxb7
- 2.Qxc6#
- 1...Be7!
- threat
- 1.Rc1?
- threat
- 2.Rd1#
- 2.Qc4#
- 1...Bg5
- 2.Qc4#
- 1...Sa5
- 2.Rd1#
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 2.Qc4#
- 1...Sd6
- 2.Sb6#
- 2.Rd1#
- 2.Rc5#
- 1...c5
- 2.Rd1#
- 2.Rxc5#
- 1...e4!
- threat
- 1.Rc2?
- threat
- 2.Rd2#
- 2.Qc4#
- 1...Bg5
- 2.Qc4#
- 1...Sa5
- 2.Rd2#
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 2.Qc4#
- 1...Sd6
- 2.Sb6#
- 2.Rd2#
- 2.Rc5#
- 1...c5
- 2.Rd2#
- 2.Rxc5#
- 1...e4!
- threat
- 1.Rc3?
- threat
- 2.Rd3#
- 2.Qc4#
- 1...Sa5
- 2.Rd3#
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 2.Qc4#
- 1...Sd6
- 2.Sb6#
- 2.Rd3#
- 2.Rc5#
- 1...c5
- 2.Rd3#
- 2.Rxc5#
- 1...e4!
- threat
- 1.Rf4?
- threat
- 2.Qc4#
- 1...e4
- 2.Qxe4#
- 1...Sa5
- 2.Qxa5#
- 1...Sd6
- 2.Sb6#
- 1...c5
- 2.Qd7#
- 1...exf4!
- threat
- 1.Rch4?
- threat
- 2.Qc4#
- 1...e4
- 2.Qxe4#
- 1...Sa5
- 2.Qxa5#
- 1...Sd6
- 2.Sb6#
- 1...f4
- 2.Qd4#
- 1...c5
- 2.Qd7#
- 1...Bxh4!
- threat
- 1.Rxc6?
- threat
- 2.Sb6#
- 2.Rc5#
- 2.Rd6#
- 2.Qc4#
- 1...e4
- 2.Rc5#
- 1...Be7
- 2.Sb6#
- 2.Sxe7#
- 2.Qc4#
- 1...Sa5
- 2.Sb6#
- 2.Rc5#
- 2.Rd6#
- 1...Sc5
- 2.Sb6#
- 2.Rxc5#
- 2.Rd6#
- 1...Sd6
- 2.Sb6#
- 2.Rc5#
- 2.Rxd6#
- 1...Sf7
- 2.Sb6#
- 2.Rc5#
- 2.Qc4#
- 1...Sxc6!
- threat
- 1.Rh3?
- threat
- 2.Rd3#
- 1...Sc5
- 2.Rxc5#
- 1...e4!
- threat
- 1.Rxf5?
- threat
- 2.Rd4#
- 1...c5
- 2.Rxc5#
- 1...exf5!
- threat
- 1.Qb4?
- threat
- 2.Sb6#
- 1...c5
- 2.Rxc5#
- 2.Qxc5#
- 1...Sc5
- 2.Rxc5#
- 2.Qxc5#
- 1...e4!
- threat
- 1.Bxb7?
- Keys
- 1.Rg4!
- threat
- 2.Qc4#
- 1...fxg4
- 2.Qd4#
- 1...e4
- 2.Qxe4#
- 1...Sa5
- 2.Qxa5#
- 1...Sd6
- 2.Sb6#
- 1...f4
- 2.Qd4#
- 1...c5
- 2.Qd7#
- threat
- 1.Rg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- S(h);N_GUARD,P_SPINP(e)::R1(D)
- S(h);N_GUARD,P_SPINP(e)::R1(D),XS(h)
- S(i);N_GUARD::QAB1(C),XP(e)
- P(c);P_SPINP(b)::R1(D)
- P(e);P_SPINS(h)::R1(D),XP(e)
- Tries
- Try
- B(F);P_PINP(e),XS(h)
- Threat
- R1(D)
- Vars
- S(i);N_GUARD,N_SPINP(e),XB(F)::QAB1(C),XP(e)
- Refutation
- B(g);
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- B(g);::QAB1(C)
- Refutation
- P(b);P_SPINP(c)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- B(g);::QAB1(C)
- Refutation
- P(b);P_SPINP(c)
- Try
- R(D);
- Threat
- DUALS(2)
- Refutation
- P(b);P_SPINP(c)
- Try
- R(D);
- Threat
- QAB1(C)
- Vars
- P(b);P_SPINP(c)::QAB1(C),XP(b)
- S(h);N_GUARD,P_SPINP(e)::QAR(C),XS(h)
- S(h);P_SPINP(e),SBLOCK::S(G)
- P(e);OGATE,P_SPINS(h)::QAR2(C)
- Refutation
- P(b);P_SPINP(c),XR(D)
- Try
- R(D);
- Threat
- QAB1(C)
- Vars
- P(b);P_SPINP(c)::QAB1(C),XP(b)
- S(h);N_GUARD,P_SPINP(e)::QAR(C),XS(h)
- S(h);P_SPINP(e),SBLOCK::S(G)
- P(c);P_SPINP(b)::QAR1(C)
- P(e);OGATE,P_SPINS(h)::QAR2(C)
- Refutation
- B(g);XR(D)
- Try
- R(D);XP(e)
- Threat
- DUALS(4)
- Vars
- P(b);P_SPINP(c)::R1(D)
- Refutation
- S(i);XR(D)
- Try
- R(E);
- Threat
- R(E)
- Vars
- S(h);N_GUARD,P_SPINP(e)::R1(D),XS(h)
- Refutation
- P(b);
- Try
- R(E);P_PINP(b),XP(c)
- Threat
- R1(D)
- Vars
- P(e);P_SPINS(h)::R1(D),XP(e)
- Refutation
- P(f);N_SPINP(b),XR(E)
- Try
- Q(C);
- Threat
- S(G)
- Refutation
- P(b);P_SPINP(c)
- Try
- Actual
- R(D);
- Threat
- QAB1(C)
- Vars
- P(c);P_SPINP(b),XR(D)::QAR1(C)
- P(b);P_SPINP(c)::QAB1(C),XP(b)
- S(h);N_GUARD,P_SPINP(e)::QAR(C),XS(h)
- S(h);P_SPINP(e),SBLOCK::S(G)
- P(c);P_SPINP(b)::QAR1(C)
- P(e);OGATE,P_SPINS(h)::QAR2(C)
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