MESON Chess Problem Database
Problem Display
PID: 200100 (6QK/1B2B3/4nn2/1p6/2k1r2p/Pp4bR/1P2P3/3R1N2 w - - 0 1)
Walton, FW
The Observer, 1947
(First published on Sun Sep 28 1947)
#2
10 + 8
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Re3
- 2.Sxe3#
- 1...Rd4
- 2.Se3#
- 2.Rc1#
- 1...Rf4
- 2.Se3#
- 1...Rg4
- 2.Se3#
- 1...Bf2
- 2.Rc3#
- 1...Bh2
- 2.Rc3#
- 1...Bf4
- 2.Rc3#
- 1...Bd6
- 2.Rc3#
- 1...Bc7
- 2.Rc3#
- 1...Bb8
- 2.Rc3#
- 1...Sg4
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Sh5
- 2.Bd5#
- 1...Sd7
- 2.Bd5#
- 1...Sh7
- 2.Bd5#
- 1...Se8
- 2.Bd5#
- 1...Sxg8
- 2.Bd5#
- 1...b4
- 2.Ba6#
- 1...Re3
- Tries
- 1.Bxe4?
- threat
- 2.Se3#
- 1...Bd6
- 2.Rc3#
- 1...Bf2
- 2.Rc3#
- 1...Bf4
- 2.Rc3#
- 1...Sg4
- 2.Bd5#
- 2.Qxe6#
- 1...Sd5
- 2.Bxd5#
- 1...b4!
- threat
- 1.Rd4+?
- 1...Rxd4
- 2.Se3#
- 1...Kxd4!
- 1...Rxd4
- 1.Rxg3?
- threat
- 2.Rc3#
- 1...b4
- 2.Ba6#
- 1...Re3
- 2.Sxe3#
- 1...Sd5
- 2.Bxd5#
- 1...hxg3!
- threat
- 1.Qxe6+?
- 1...Sd5
- 2.Bxd5#
- 2.Qxd5#
- 2.Qxe4#
- 2.Qc6#
- 1...Rxe6!
- 1...Sd5
- 1.Qxg3?
- threat
- 2.Qxb3#
- 2.Qc3#
- 2.Qd3#
- 1...b4
- 2.Ba6#
- 2.Qd3#
- 1...Re3
- 2.Sxe3#
- 1...Rd4
- 2.Se3#
- 2.Rc1#
- 2.Qxb3#
- 2.Qc3#
- 1...Sd4
- 2.Sd2#
- 2.Qc3#
- 2.Qd3#
- 1...Sf4
- 2.Qxb3#
- 2.Qc3#
- 1...Sc5
- 2.Qc3#
- 1...Sd5
- 2.Bxd5#
- 2.Qxb3#
- 2.Qd3#
- 1...hxg3!
- threat
- 1.Qc8+?
- 1...Bc7
- 2.Rc3#
- 1...Sc5
- 2.Qxc5#
- 1...Sc7!
- 1...Bc7
- 1.Qd8?
- threat
- 2.Sd2#
- 2.Rc1#
- 2.Qd3#
- 1...Rxe2
- 2.Qd3#
- 1...Bd6
- 2.Rc3#
- 1...b4
- 2.Ba6#
- 2.Qd3#
- 1...Re3
- 2.Sd2#
- 2.Sxe3#
- 1...Rd4
- 2.Se3#
- 2.Rc1#
- 1...Be1
- 2.Qd3#
- 1...Bf4
- 2.Rc3#
- 2.Qd3#
- 1...Be5
- 2.Sd2#
- 2.Qd3#
- 1...Sd4
- 2.Sd2#
- 1...Sf4
- 2.Sd2#
- 2.Rc1#
- 2.Qc7#
- 2.Qc8#
- 1...Sc5
- 2.Sd2#
- 2.Rc1#
- 1...Sd5
- 2.Bxd5#
- 2.Qxd5#
- 1...Sd7
- 2.Bd5#
- 1...Sxd8!
- threat
- 1.Bxe4?
- Keys
- 1.Qg4!
- threat
- 2.Se3#
- 1...Sxg4
- 2.Bd5#
- 1...Bd6
- 2.Rc3#
- 1...b4
- 2.Ba6#
- 1...Bf2
- 2.Rc3#
- 1...Bf4
- 2.Rc3#
- 1...Sd4
- 2.Sd2#
- 1...Sf4
- 2.Qc8#
- 1...Sd5
- 2.Bxd5#
- threat
- 1.Qg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- R(d);N_GUARD::S(B),XR(d)
- R(d);N_GUARD::S(B)
- B(b);OGATE::R1(F)
- S(h);N_GUARD::B(G)
- S(h);N_GUARD,N_SPINS(g)::B(G),XS(h)
- S(h);N_GUARD,N_SPINS(g),XQ(I)::B(G)
- P(f);OGATEB::B(G)
- Tries
- Try
- B(G);XR(d)
- Threat
- S(B)
- Vars
- B(b);OGATE::R1(F)
- S(h);N_GUARD,N_SPINS(g)::B(G),XS(h)
- Refutation
- P(f);
- Try
- R(A);CHECK
- Vars
- R(d);SBLOCK,XR(A)::S(B)
- Refutation
- K(c);N_SPINS(g),P-FLIGHT,XR(A)
- Try
- R(F);XB(b)
- Threat
- R1(F)
- Vars
- P(f);OGATEB::B(G)
- R(d);N_GUARD::S(B),XR(d)
- S(h);N_GUARD,N_SPINS(g)::B(G),XS(h)
- Refutation
- P(e);XR(F)
- Try
- Q(I);CHECK,XS(g)
- Refutation
- R(d);XQ(I)
- Try
- Q(I);N_PINS(g),XB(b)
- Threat
- DUALS(3)
- Vars
- R(d);N_GUARD::S(B),XR(d)
- S(g);::QAR1(I)
- Refutation
- P(e);XQ(I)
- Try
- Q(I);CHECK,N_PINS(g)
- Vars
- B(b);OGATE,P_SPINB(b)::R1(F)
- S(g);N_GUARD,P_SPINS(g)::QAR1(I),XS(g)
- Refutation
- S(g);P_SPINS(g)
- Try
- Q(I);N_PINS(g)
- Threat
- DUALS(3)
- Vars
- R(d);XP(D)::QAB1(I)
- B(b);OGATE::R1(F)
- B(b);::QAB1(I)
- S(g);::S(B)
- S(h);N_GUARD::B(G)
- Refutation
- S(g);XQ(I)
- Try
- Actual
- Q(I);N_PINS(g),P_PINR(d)
- Threat
- S(B)
- Vars
- S(h);N_GUARD,N_SPINR(d),XQ(I)::B(G)
- B(b);OGATE::R1(F)
- P(f);OGATEB::B(G)
- B(b);N_SPINR(d),OGATE::R1(F)
- S(g);N_SPINR(d),SBLOCK::S(B)
- S(g);N_SPINR(d),OGATE::QAR(I)
- S(h);N_GUARD::B(G),XS(h)
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