MESON Chess Problem Database
Problem Display
PID: 199394 (8/1B1nRN1p/6bP/q2r2Qp/r4p2/pR1N1k2/P2Pp1p1/1K2B1n1 w - - 0 1)
Clark, Cecil Henry Douglas
The Problemist, 1954
#2
11 + 13
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Sde5#
- 1...Bxd3+
- 2.Rxd3#
- 1...Be4
- 2.Qxf4#
- 1...Bxf7
- 2.Sb4#
- 1...Re4
- Tries
- 1.Se5+?
- 1...Ke4
- 2.Qxf4#
- 1...Sxe5!
- 1...Ke4
- 1.Bxd5+?
- 1...Re4
- 2.Sb4#
- 2.Sde5#
- 2.Qxf4#
- 1...Be4
- 2.Qxf4#
- 2.Qxh5#
- 1...Qxd5!
- 1...Re4
- 1.Qg4+?
- 1...hxg4
- 2.Sg5#
- 1...Kxg4!
- 1...hxg4
- 1.Qf5?
- threat
- 2.Sb4#
- 2.Sde5#
- 2.Sg5#
- 2.Re3#
- 1...Qxd2
- 2.Sde5#
- 2.Sg5#
- 1...Bxf7
- 2.Sb4#
- 2.Se5#
- 2.Re3#
- 1...Qc3
- 2.Sg5#
- 2.Re3#
- 1...Qb4
- 2.Sxb4#
- 2.Sde5#
- 2.Sg5#
- 2.Re3#
- 1...Qb6
- 2.Sde5#
- 2.Sg5#
- 1...Qc7
- 2.Sc5#
- 2.Sde5#
- 2.Sg5#
- 2.Re3#
- 1...Qb5
- 2.Sde5#
- 2.Sg5#
- 2.Re3#
- 1...Qc5
- 2.Sxc5#
- 2.Sde5#
- 2.Sg5#
- 1...Qa6
- 2.Sde5#
- 2.Sg5#
- 2.Re3#
- 1...Qa7
- 2.Sc5#
- 2.Sde5#
- 2.Sg5#
- 1...Rb4
- 2.Sxb4#
- 2.Sde5#
- 2.Sg5#
- 2.Re3#
- 1...Rc4
- 2.Sde5#
- 2.Sg5#
- 2.Re3#
- 1...Rd4
- 2.Sde5#
- 2.Sg5#
- 2.Re3#
- 1...Re4
- 2.Sde5#
- 2.Sg5#
- 1...Sh3
- 2.Sb4#
- 2.Sde5#
- 2.Re3#
- 2.Qxh3#
- 1...Sc5
- 2.Sde5#
- 2.Sfe5#
- 2.Sg5#
- 2.Re3#
- 1...Se5
- 2.Sdxe5#
- 2.Sfxe5#
- 2.Sg5#
- 1...Bxf5!
- threat
- 1.Qxg6?
- threat
- 2.Sb4#
- 2.Sde5#
- 2.Qxh5#
- 1...Qxd2
- 2.Sde5#
- 2.Qxh5#
- 1...Qc3
- 2.Qxh5#
- 1...Qb4
- 2.Sxb4#
- 2.Sde5#
- 2.Qxh5#
- 1...Qb6
- 2.Sde5#
- 2.Qxh5#
- 1...Qc7
- 2.Sc5#
- 2.Sde5#
- 2.Qxh5#
- 1...Qb5
- 2.Sde5#
- 2.Qxh5#
- 1...Qc5
- 2.Sxc5#
- 2.Sde5#
- 2.Qxh5#
- 1...Qa6
- 2.Sde5#
- 2.Qxh5#
- 1...Qa7
- 2.Sc5#
- 2.Sde5#
- 2.Qxh5#
- 1...Rb4
- 2.Sxb4#
- 2.Sde5#
- 2.Qxh5#
- 1...Rc4
- 2.Sde5#
- 2.Qxh5#
- 1...Rd4
- 2.Sde5#
- 2.Qxh5#
- 1...Re4
- 2.Sde5#
- 1...Sc5
- 2.Sde5#
- 2.Sfe5#
- 2.Qxh5#
- 1...Se5
- 2.Sdxe5#
- 2.Sfxe5#
- 1...Sf6
- 2.Sb4#
- 2.Sde5#
- 2.Sfe5#
- 1...h4
- 2.Sb4#
- 2.Sde5#
- 2.Qh5#
- 1...hxg6!
- threat
- 1.Se5+?
- Keys
- 1.Qh4!
- threat
- 2.Sg5#
- 1...Bxd3+
- 2.Rxd3#
- 1...Bxf7
- 2.Sb4#
- 1...Re4
- 2.Sde5#
- 1...Be4
- 2.Qxf4#
- 1...Sh3
- 2.Qxh3#
- threat
- 1.Qh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(f);N_PINS(F),N_SPINR(i),SBLOCK::R(E)+S(F),DCHECK
- B(k);CHECK,OGATE,P_SPINB(k),XS(F)::R(E),XB(k)
- B(k);N_SPINR(i),S_CUTR(f)::QAR1(G),XP(g)
- B(k);N_PINS(F),XS(K)::R(E)+S(F)
- Tries
- Try
- S(K);CHECK
- Vars
- K(e);N_PINS(F),S_FLIGHT::QAR1(G),XP(g)
- Refutation
- S(l);XS(K)
- Try
- B(I);CHECK,XR(i)
- Refutation
- Q(h);XB(I)
- Try
- Q(G);CHECK
- Vars
- P(j);SBLOCK,XQ(G)::S(K)
- Refutation
- K(e);N_SPINR(i),S_FLIGHT,XQ(G)
- Try
- Q(G);N_SPINS(F),P_PINP(g)
- Threat
- DUALS(4)
- Refutation
- B(k);N_SPINP(g),P_PINS(F),XQ(G)
- Try
- Q(G);N_SPINS(F),XB(k)
- Threat
- DUALS(3)
- Vars
- Q(h);::QAB(G),XP(j)
- R(f);N_SPINR(i)::R(E)+S(F),DCHECK
- Refutation
- P(m);XQ(G)
- Try
- Actual
- Q(G);
- Threat
- S(K)
- Vars
- B(k);CHECK,OGATE,P_SPINB(k),XS(F)::R(E),XB(k)
- B(k);N_PINS(F),XS(K)::R(E)+S(F)
- R(f);N_PINS(F),N_SPINR(i),SBLOCK::R(E)+S(F),DCHECK
- B(k);N_SPINR(i),S_CUTR(f)::QAR1(G),XP(g)
- S(a);N_GUARD::QAR2(G),XS(a)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).