MESON Chess Problem Database
Problem Display
PID: 417 (1n2R3/2b2p2/1N2n3/3pk3/1BR1Np1p/7B/8/K4Q2 w - - 0 1)
Chandler, Guy Wills
The Observer, 1945
(First published on Sun Mar 11 1945)
#2
8 + 8
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Bxb6
- 2.Bd6#
- 1...Bd6
- 2.Bxd6#
- 1...Bd8
- 2.Bd6#
- 1...Sa6
- 2.Sd7#
- 1...Sc6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...f6
- 2.Rxe6#
- 1...Bxb6
- Tries
- 1.Qe2?
- 1...Bxb6
- 2.Bd6#
- 1...dxc4
- 2.Bc3#
- 1...dxe4
- 2.Qb2#
- 1...f3
- 2.Qh2#
- 1...Bd6
- 2.Bxd6#
- 1...Bd8
- 2.Bd6#
- 1...Sa6
- 2.Sd7#
- 1...Sc6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...d4
- 2.Rc5#
- 1...f6
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Rxe6#
- 1...f5!
- 1...Bxb6
- 1.Qd3?
- threat
- 2.Qd4#
- 2.Qxd5#
- 1...Bxb6
- 2.Bd6#
- 1...dxc4
- 2.Sxc4#
- 2.Bc3#
- 2.Qd5#
- 1...dxe4
- 2.Bc3#
- 2.Qc3#
- 2.Qd4#
- 1...Sc6
- 2.Sd7#
- 2.Qxd5#
- 1...d4
- 2.Rc5#
- 2.Qxd4#
- 1...f3!
- threat
- 1.Qd1?
- threat
- 2.Qd4#
- 2.Qxd5#
- 1...Bxb6
- 2.Bd6#
- 1...dxc4
- 2.Qd5#
- 1...dxe4
- 2.Bc3#
- 2.Qd4#
- 1...d4
- 2.Qxd4#
- 1...Sc6
- 2.Sd7#
- 2.Qxd5#
- 1...f3!
- threat
- 1.Qg1?
- threat
- 2.Qd4#
- 1...Bxb6
- 2.Bd6#
- 1...f3
- 2.Qh2#
- 1...d4
- 2.Qxd4#
- 1...Sc6
- 2.Sd7#
- 1...dxc4!
- threat
- 1.Qf2?
- threat
- 2.Qd4#
- 1...Bxb6
- 2.Bd6#
- 1...f3
- 2.Qh2#
- 1...d4
- 2.Qxd4#
- 1...Sc6
- 2.Sd7#
- 1...dxc4!
- threat
- 1.Qf3?
- 1...Bxb6
- 2.Bd6#
- 1...dxc4
- 2.Bc3#
- 1...dxe4
- 2.Qc3#
- 1...Bd6
- 2.Bxd6#
- 1...Bd8
- 2.Bd6#
- 1...Sa6
- 2.Sd7#
- 1...Sc6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...d4
- 2.Rc5#
- 1...f6
- 2.Rxe6#
- 1...f5!
- 1...Bxb6
- 1.Qe2?
- Keys
- 1.Qg2!
- 1...Bxb6
- 2.Bd6#
- 1...dxc4
- 2.Bc3#
- 1...dxe4
- 2.Qb2#
- 1...f3
- 2.Qh2#
- 1...Bd6
- 2.Bxd6#
- 1...Bd8
- 2.Bd6#
- 1...Sa6
- 2.Sd7#
- 1...Sc6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...d4
- 2.Rc5#
- 1...f5
- 2.Qg7#
- 1...f6
- 2.Rxe6#
- 1...Bxb6
- 1.Qg2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- B(f);N_GUARD,XS(G)::B(D)
- B(f);N_GUARD::B(D),XB(f)
- B(f);N_GUARD::B(D)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- P(g);N_GUARD::R1(H),XS(e)
- Tries
- Try
- Q(B);
- Vars
- B(f);N_GUARD,XS(G)::B(D)
- P(c);N_GUARD,XR(E)::B(D)
- P(c);N_GUARD,P_SPINP(c),XS(F)::QAB(B)
- P(a);OGATEB::QAB(B)
- B(f);N_GUARD::B(D),XB(f)
- B(f);N_GUARD::B(D)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- P(c);OGATEB,SBLOCK::R(E)
- Refutation
- P(g);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(f);N_GUARD,XS(G)::B(D)
- Refutation
- P(a);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(f);N_GUARD,XS(G)::B(D)
- P(c);XR(E)::QAR1(B)
- P(c);::QAB1(B),XP(c)
- Refutation
- P(a);
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- B(f);N_GUARD,XS(G)::B(D)
- P(a);OGATEB::QAB(B)
- P(c);::QAB1(B),XP(c)
- S(h);N_GUARD::S(G)
- Refutation
- P(c);XR(E)
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- B(f);N_GUARD,XS(G)::B(D)
- P(a);OGATEB::QAB(B)
- P(c);::QAB1(B),XP(c)
- S(h);N_GUARD::S(G)
- Refutation
- P(c);XR(E)
- Try
- Q(B);
- Vars
- B(f);N_GUARD,XS(G)::B(D)
- P(c);N_GUARD,XR(E)::B(D)
- P(c);N_GUARD,XS(F)::QAB(B)
- B(f);N_GUARD::B(D),XB(f)
- B(f);N_GUARD::B(D)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- P(c);OGATEB,SBLOCK::R(E)
- P(g);N_GUARD::R1(H),XS(e)
- Refutation
- P(g);
- Try
- Actual
- Q(B);
- Vars
- B(f);N_GUARD,XS(G)::B(D)
- P(c);N_GUARD,XR(E)::B(D)
- P(c);N_GUARD,XS(F)::QAB(B)
- P(a);OGATEB::QAB(B)
- B(f);N_GUARD::B(D),XB(f)
- B(f);N_GUARD::B(D)
- S(h);N_GUARD::S(G)
- S(h);N_GUARD::S(G),XS(h)
- P(c);OGATEB,SBLOCK::R(E)
- P(g);N_GUARD::QAB(B)
- P(g);N_GUARD::R1(H),XS(e)
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