MESON Chess Problem Database
Problem Display
PID: 259 (2qbQ3/7N/3Bn3/3n1P2/R1B1k1PR/2Pp1p2/3p4/K2N1b2 w - - 0 1)
Chandler, Guy Wills
The Observer, 1950
(First published on Sun Oct 1 1950)
#2
11 + 9
| 6104 | A Tribute to G W Chandler | 1997 |
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Qxe6#
- 1...Qb7
- 2.Qxe6#
- 1...Qxc4
- 2.Rxc4#
- 2.Qxe6#
- 1...Qc5
- 2.Qxe6#
- 1...Qc6
- 2.Qxe6#
- 1...Qc7
- 2.Qxe6#
- 1...Qa8
- 2.Qxe6#
- 1...Qb8
- 2.Qxe6#
- 1...Ba5
- 2.Sg5#
- 1...Bg5
- 2.Sxg5#
- 1...Bb6
- 2.Sg5#
- 1...Bc7
- 2.Sg5#
- 1...Se3
- 2.Sf2#
- 1...Sf6
- 2.Sg5#
- 1...Sc7
- 2.Ba2#
- 2.Bb3#
- 2.Bxe6#
- 1...Se7
- 2.Sf6#
- 1...Qa6
- Tries
- 1.Ba2+?
- 1...Qc4
- 2.Rxc4#
- 2.Qxe6#
- 1...Sb4!
- 1...Qc4
- 1.Bb3+?
- 1...Qc4
- 2.Rxc4#
- 2.Qxe6#
- 1...Sb4!
- 1...Qc4
- 1.Bb5+?
- 1...Qc4
- 2.Rxc4#
- 2.Qxe6#
- 1...Sb4!
- 1...Qc4
- 1.Ba6+?
- 1...Qc4
- 2.Rxc4#
- 2.Qxe6#
- 1...Sb4!
- 1...Qc4
- 1.Qb5?
- threat
- 2.Bxd3#
- 2.Bxd5#
- 2.Qxd5#
- 1...Sxc3
- 2.Bxd3#
- 2.Bd5#
- 2.Qe5#
- 1...f2
- 2.Bxd5#
- 2.Qxd5#
- 1...Sb4
- 2.Bd5#
- 2.Qe5#
- 1...Qb7
- 2.Bxd3#
- 2.Bxd5#
- 1...Qc5
- 2.Bxd3#
- 1...Qc6
- 2.Bxd3#
- 2.Bxd5#
- 1...Qa8
- 2.Bxd3#
- 2.Bxd5#
- 1...Se3
- 2.Sf2#
- 2.Bxd3#
- 2.Bd5#
- 2.Qe5#
- 1...Sdf4
- 2.Bxd3#
- 2.Bd5#
- 2.Qe5#
- 1...Sb6
- 2.Bxd3#
- 2.Bd5#
- 2.Qe5#
- 1...Sf6
- 2.Bxd3#
- 2.Bd5#
- 2.Qe5#
- 1...Sdc7
- 2.Bxd3#
- 2.Bd5#
- 2.Bxe6#
- 2.Qe5#
- 1...Se7
- 2.Sf6#
- 2.Bxd3#
- 2.Bd5#
- 2.Qe5#
- 1...Sd4
- 2.Bxd5#
- 2.Qxd5#
- 1...Sef4
- 2.Bxd3#
- 2.Bxd5#
- 1...Sc5
- 2.Bxd3#
- 1...Sec7
- 2.Bxd3#
- 2.Bxd5#
- 1...Qxc4!
- threat
- 1.Qc6?
- threat
- 2.Bxd5#
- 2.Qxd5#
- 1...Qb7
- 2.Bxd5#
- 1...Qa8
- 2.Bxd5#
- 1...Sf4
- 2.Ba2#
- 2.Bb3#
- 2.Bb5#
- 2.Bxd5#
- 2.Ba6#
- 1...Sc7
- 2.Ba2#
- 2.Bb3#
- 2.Bb5#
- 2.Bxd5#
- 2.Ba6#
- 1...Qxc6!
- threat
- 1.g5+?
- 1...Sf4
- 2.Rxf4#
- 1...Kxf5!
- 1...Sf4
- 1.Ba2+?
- Keys
- 1.Ra5!
- threat
- 2.Bxd5#
- 1...Qxc4
- 2.Qxe6#
- 1...Bxa5
- 2.Sg5#
- 1...Sxc3
- 2.g5#
- 1...Sb4
- 2.g5#
- 1...Qb7
- 2.Qxe6#
- 1...Qc5
- 2.Qxe6#
- 1...Qc6
- 2.Qxe6#
- 1...Qa8
- 2.Qxe6#
- 1...Se3
- 2.Sf2#
- 1...Sf4
- 2.Re5#
- 1...Sb6
- 2.g5#
- 1...Sf6
- 2.Sg5#
- 1...Sc7
- 2.g5#
- 1...Se7
- 2.Sf6#
- threat
- 1.Ra5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 6
- Sets
- Q(h);N_GUARD,P_PINR(D)::QAR2(K),XS(g)
- Q(h);N_GUARD::QAR2(K),XS(g)
- B(i);N_GUARD::S(J)
- B(i);N_GUARD::S(J),XB(i)
- S(f);SBLOCK::S(B)
- S(f);S_CUTB(i)::S(J)
- S(f);N_GUARD,N_SPINS(g),S_CUTB(i)::S(J)
- Tries
- Try
- B(E);CHECK
- Refutation
- S(f);N_SPINS(g),P_SPINS(f)
- Try
- B(E);CHECK
- Refutation
- S(f);N_SPINS(g),P_SPINS(f)
- Try
- B(E);CHECK
- Refutation
- S(f);N_SPINS(g),P_SPINS(f)
- Try
- B(E);CHECK
- Refutation
- S(f);N_SPINS(g),P_SPINS(f)
- Try
- Q(K);N_PINS(g)
- Threat
- DUALS(3)
- Vars
- Q(h);::R(D)+B(E),DCHECK,XP(c)
- S(g);::R(D)+B(E),DCHECK,XP(c)
- Refutation
- Q(h);P_SPINQ(h),XB(E)
- Try
- Q(K);N_PINS(g),P_PINS(f)
- Threat
- DUALS(2)
- Vars
- Q(h);::R(D)+B(E),DCHECK,XS(f)
- Q(h);P_PINR(D)::R(D)+B(E),DCHECK,XS(f)
- Refutation
- Q(h);N_SPINS(f),XQ(K)
- Try
- P(F);CHECK
- Vars
- S(f);N_GUARD,N_SPINS(g),P_SPINS(f)::R1(G),XS(f)
- Refutation
- K(e);N_SPINS(g),S_FLIGHT,XP(H)
- Try
- Actual
- R(D);
- Threat
- B(E),XS(f)
- Vars
- Q(h);N_GUARD,XB(E)::QAR2(K),XS(g)
- B(i);N_GUARD,XR(D)::S(J)
- S(f);N_GUARD,XP(C)::R(G)+P(F)
- S(f);N_GUARD::R(G)+P(F)
- Q(h);N_GUARD::QAR2(K),XS(g)
- Q(h);N_GUARD,P_PINR(D)::QAR2(K),XS(g)
- S(f);SBLOCK::S(B)
- S(f);OGATE,SBLOCK::R1(D)
- S(f);S_CUTB(i)::S(J)
- S(f);N_GUARD,N_SPINS(g),S_CUTB(i)::S(J)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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