MESON Chess Problem Database
Problem Display
PID: 164965 (8/1R1NB3/P2q4/1r2QKp1/bk1bn1Rr/1N1P2p1/PP6/8 w - - 0 1)
Sumner, Christopher Richard Benson
The Observer, 1927
(First published on Sun Jan 30 1927)
#2
11 + 9
| 15239 | Valois Notebooks | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rb6
- 2.Qa5#
- 1...Rxb7
- 2.Qa5#
- 1...Bxb3
- 2.Qxb5#
- 1...Bxb2
- 2.Bxd6#
- 1...Bc3
- 2.Bxd6#
- 1...Bc5
- 2.Qc3#
- 1...Sd2
- 2.Bxd6#
- 1...Sf2
- 2.Bxd6#
- 1...Sc3
- 2.Bxd6#
- 1...Sc5
- 2.Qe1#
- 1...Sf6
- 2.Bxd6#
- 1...Rb6
- Tries
- 1.Sxd4?
- threat
- 2.Sc6#
- 1...Rxb7
- 2.a3#
- 1...Bd1
- 2.Qxb5#
- 1...Bc2
- 2.Qxb5#
- 1...Bb3
- 2.Qxb5#
- 1...Rb6
- 2.a3#
- 1...Ka5!
- threat
- 1.Sf6?
- threat
- 2.Sd5#
- 1...Rxb7
- 2.Qa5#
- 1...Bxb3
- 2.Qxb5#
- 1...Bxb2
- 2.Bxd6#
- 1...Sxf6
- 2.Bxd6#
- 1...Rb6
- 2.Qa5#
- 1...Bc5
- 2.Qc3#
- 1...Sc3
- 2.Bxd6#
- 1...Sc5
- 2.Qe1#
- 1...Bb6!
- threat
- 1.Bxd6+?
- 1...Bc5
- 2.Bxc5#
- 2.Qc3#
- 2.Qd4#
- 2.Qxe4#
- 2.Qxc5#
- 1...Sc5
- 2.Bxc5#
- 2.Qxd4#
- 2.Qe1#
- 2.Qxc5#
- 1...Sxd6+!
- 1...Bc5
- 1.Qd5?
- threat
- 2.a3#
- 1...Bxb3
- 2.Qxb5#
- 1...Bxb2!
- threat
- 1.Sxd4?
- Keys
- 1.Sb8!
- threat
- 2.Sc6#
- 1...Rxb7
- 2.Qa5#
- 1...Bxb3
- 2.Qxb5#
- 1...Bxb2
- 2.Bxd6#
- 1...Rb6
- 2.Qa5#
- 1...Bc5
- 2.Qc3#
- 1...Sc5
- 2.Qe1#
- threat
- 1.Sb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- R(g);N_PINQ(F)::QAB1(F)
- R(g);N_PINQ(F),N_SPINR(g),XR(I)::QAB1(F)
- B(b);N_GUARD,XS(C)::QAR1(F),XR(g)
- B(d);N_GUARD,P_SPINS(e),XP(B)::B(K),XQ(i)
- B(d);N_GUARD,P_SPINS(e)::B(K),XQ(i)
- B(d);N_PINQ(F),N_SPINQ(i),P_SPINS(e)::QAB1(F)
- S(e);N_GUARD,P_SPINB(d)::B(K),XQ(i)
- S(e);N_PINQ(F),N_SPINQ(i),P_SPINB(d)::QAB(F)
- Tries
- Try
- S(C);XB(d)
- Threat
- S(C)
- Vars
- R(g);N_PINQ(F),N_SPINR(g),XR(I)::P(A)
- B(b);N_GUARD::QAR1(F),XR(g)
- R(g);N_PINQ(F)::P(A)
- Refutation
- K(c);N_SPINQ(i),S_FLIGHT
- Try
- S(J);
- Threat
- S(J)
- Vars
- R(g);N_PINQ(F),N_SPINR(g),XR(I)::QAB1(F)
- B(b);N_GUARD,XS(C)::QAR1(F),XR(g)
- B(d);N_GUARD,P_SPINS(e),XP(B)::B(K),XQ(i)
- S(e);N_GUARD,P_SPINB(d),XS(J)::B(K),XQ(i)
- R(g);N_PINQ(F)::QAB1(F)
- B(d);N_PINQ(F),N_SPINQ(i),P_SPINS(e)::QAB1(F)
- S(e);N_GUARD,P_SPINB(d)::B(K),XQ(i)
- S(e);N_PINQ(F),N_SPINQ(i),P_SPINB(d)::QAB(F)
- Refutation
- B(d);N_SPINR(g),P_SPINS(e)
- Try
- B(K);CHECK,XQ(i)
- Refutation
- S(e);CHECK,P_SPINB(d),XB(K)
- Try
- Q(F);
- Threat
- P(A)
- Vars
- B(b);N_GUARD,XS(C)::QAR1(F),XR(g)
- Refutation
- B(d);P_SPINS(e),XP(B)
- Try
- Actual
- S(J);
- Threat
- S(J)
- Vars
- R(g);N_PINQ(F),N_SPINR(g),XR(I)::QAB1(F)
- B(b);N_GUARD,XS(C)::QAR1(F),XR(g)
- B(d);N_GUARD,P_SPINS(e),XP(B)::B(K),XQ(i)
- R(g);N_PINQ(F)::QAB1(F)
- B(d);N_PINQ(F),N_SPINQ(i),P_SPINS(e)::QAB1(F)
- S(e);N_PINQ(F),N_SPINQ(i),P_SPINB(d)::QAB(F)
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