MESON Chess Problem Database
Problem Display
PID: 162389 (5B2/3N3K/2p5/3k2N1/2nbR3/1n1b1P2/B7/3RQ3 w - - 0 1)
Sumner, Christopher Richard Benson
The Observer, 1924
(First published on Sun May 25 1924)
#2
9 + 6
| 15239 | Valois Notebooks | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Sf6#
- 1...Bf1
- 2.Sf6#
- 1...Bc2
- 2.Sf6#
- 1...Be2
- 2.Sf6#
- 1...Bxe4+
- 2.Qxe4#
- 2.fxe4#
- 1...Bg1
- 2.Sf6#
- 1...Bf2
- 2.Sf6#
- 1...Be3
- 2.Sf6#
- 1...Bc5
- 2.Sf6#
- 1...Bb6
- 2.Sf6#
- 1...Bf6
- 2.Sxf6#
- 1...Ba7
- 2.Sf6#
- 1...Sc5
- 2.Sb6#
- 1...Bb1
- Tries
- 1.Bxb3?
- 1...Bxe4+
- 2.Qxe4#
- 2.fxe4#
- 1...Bb1
- 2.Sb6#
- 2.Sf6#
- 2.Rxd4#
- 1...Bf1
- 2.Sb6#
- 2.Sf6#
- 2.Rdxd4#
- 2.Rexd4#
- 2.Re5#
- 1...Bc2
- 2.Sb6#
- 2.Sf6#
- 2.Rxd4#
- 1...Be2
- 2.Sb6#
- 2.Sf6#
- 2.Rdxd4#
- 2.Rexd4#
- 2.Re5#
- 1...Ba1
- 2.Sb6#
- 2.Bxc4#
- 1...Bg1
- 2.Sf6#
- 2.Bxc4#
- 1...Bb2
- 2.Sb6#
- 2.Bxc4#
- 1...Bf2
- 2.Sf6#
- 2.Bxc4#
- 1...Bc3
- 2.Sb6#
- 2.Bxc4#
- 1...Be3
- 2.Sf6#
- 2.Bxc4#
- 1...Bc5
- 2.Sf6#
- 2.Bxc4#
- 1...Be5
- 2.Sb6#
- 2.Bxc4#
- 1...Bb6
- 2.Sxb6#
- 2.Sf6#
- 2.Bxc4#
- 1...Bf6
- 2.Sb6#
- 2.Sxf6#
- 2.Bxc4#
- 1...Ba7
- 2.Sf6#
- 2.Bxc4#
- 1...Bg7
- 2.Sb6#
- 2.Bxc4#
- 1...Bh8
- 2.Sb6#
- 2.Bxc4#
- 1...c5!
- 1...Bxe4+
- 1.Rxd3?
- threat
- 2.Sf6#
- 1...Sb2
- 2.Sb6#
- 2.Rdxd4#
- 2.Rexd4#
- 1...Scd2
- 2.Sb6#
- 2.Rdxd4#
- 2.Rexd4#
- 1...Sa3
- 2.Sb6#
- 2.Rdxd4#
- 2.Rexd4#
- 1...Se3
- 2.Sb6#
- 2.Rdxd4#
- 2.Rexd4#
- 1...Sca5
- 2.Sb6#
- 2.Rdxd4#
- 2.Rexd4#
- 1...Se5
- 2.Sb6#
- 2.Rdxd4#
- 2.Rexd4#
- 1...Sb6
- 2.Sxb6#
- 2.Rdxd4#
- 2.Rexd4#
- 1...Sd6
- 2.Rdxd4#
- 2.Rexd4#
- 1...c5!
- threat
- 1.Bxb3?
- Keys
- 1.Qb4!
- 1...Bxe4+
- 2.fxe4#
- 1...c5
- 2.Qb7#
- 1...Bb1
- 2.Sf6#
- 1...Bf1
- 2.Sf6#
- 1...Bc2
- 2.Sf6#
- 1...Be2
- 2.Sf6#
- 1...Ba1
- 2.Qxc4#
- 1...Bg1
- 2.Sf6#
- 2.Qxc4#
- 1...Bb2
- 2.Qxc4#
- 1...Bf2
- 2.Sf6#
- 2.Qxc4#
- 1...Bc3
- 2.Qxc4#
- 1...Be3
- 2.Sf6#
- 2.Qxc4#
- 1...Bc5
- 2.Sf6#
- 2.Qxc4#
- 1...Be5
- 2.Qxc4#
- 1...Bb6
- 2.Sf6#
- 2.Qxc4#
- 1...Bf6
- 2.Sxf6#
- 2.Qxc4#
- 1...Ba7
- 2.Sf6#
- 2.Qxc4#
- 1...Bg7
- 2.Qxc4#
- 1...Bh8
- 2.Qxc4#
- 1...Sa1
- 2.Qd6#
- 1...Sc1
- 2.Qd6#
- 1...Sbd2
- 2.Qd6#
- 1...Sba5
- 2.Qd6#
- 1...Sc5
- 2.Sb6#
- 1...Sb2
- 2.Qxd4#
- 1...Scd2
- 2.Qxd4#
- 1...Sa3
- 2.Qxd4#
- 1...Se3
- 2.Qxd4#
- 1...Sca5
- 2.Qxd4#
- 1...Se5
- 2.Sf6#
- 2.Qxd4#
- 1...Sb6
- 2.Qxd4#
- 1...Sd6
- 2.Qxd4#
- 1...Bxe4+
- 1.Qb4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 19
- REMOVED MATES = 7
- Sets
- B(b);P_SPINB(d)::S(G)
- B(b);N_PINR(E),P_SPINB(d)::S(G)
- B(d);N_GUARD,P_SPINB(b)::S(G)
- B(d);N_GUARD,P_SPINB(b)::S(G),XB(d)
- S(a);P_SPINS(c),S_CUTB(d)::S(G)
- Tries
- Try
- B(C);P_PINS(c),XS(a)
- Refutation
- P(f);
- Try
- R(A);N_SPINR(E),P_PINB(d),XB(b)
- Threat
- S(G)
- Refutation
- P(f);
- Try
- Actual
- Q(B);
- Vars
- B(b);CHECK,OGATE,P_SPINB(d),XR(E)::P(D),XB(b)
- P(f);OGATEB::QAB(B)
- B(b);P_SPINB(d)::S(G)
- B(b);N_PINR(E),P_SPINB(d)::S(G)
- B(d);P_SPINB(b)::QAB1(B),XS(c)
- S(a);P_SPINS(c)::QAR1(B)
- S(a);P_SPINS(c),S_CUTB(d)::S(G)
- S(c);OGATE,P_SPINS(a)::QAR1(B),XB(d)
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