MESON Chess Problem Database
Problem Display
PID: 140076 (1Kn1n3/pN1ppr2/pkPr2bR/pB6/P7/8/8/1Q6 w - - 0 1)
Westbury, Eric Ernest
The Problemist, 1938
#2
7 + 11
SOLUTION
- SOUND
- Sets
- 1...Rxc6
- 2.Bd3#
- 1...axb5
- 2.Qxb5#
- 1...dxc6
- 2.Bd3#
- 1...Rxc6
- Tries
- 1.Bxa6+?
- 1...Kxa6
- 2.Sc5#
- 2.Qb5#
- 1...Kxc6
- 2.Qb5#
- 1...Bxb1!
- 1...Kxa6
- 1.Qg1+?
- 1...Rd4
- 2.Qxd4#
- 1...Rf2!
- 1...Rd4
- 1.Qb4?
- threat
- 2.Qxa5#
- 2.Qc5#
- 1...Rxc6
- 2.Qxa5#
- 1...axb5
- 2.Qxb5#
- 1...Rd5
- 2.Qxa5#
- 1...Rf5
- 2.Qxa5#
- 1...axb4!
- threat
- 1.Bxa6+?
- Keys
- 1.cxd7!
- threat
- 2.dxc8S#
- 1...Rxd7
- 2.Bxd7#
- 1...axb5
- 2.Qxb5#
- 1...Rc6
- 2.Bd3#
- 1...Bf5
- 2.Qg1#
- threat
- 1.cxd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(d);SBLOCK,XP(D)::QAR(A)+B(C)
- P(b);OGATE,P_SPINP(b),XB(C)::QAR1(A),XP(b)
- P(g);SBLOCK,XP(D)::QAR(A)+B(C)
- Tries
- Try
- B(C);CHECK,XP(b)
- Vars
- K(c);P-FLIGHT,XP(D)::QAB1(A)
- Refutation
- B(e);XQ(A)
- Try
- Q(A);CHECK
- Vars
- R(d);N_GUARD,P_SPINR(d)::QAB(A),XR(d)
- Refutation
- R(i);P_SPINR(i)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(d);XP(D)::QAB1(A),XP(a)
- P(b);OGATE,P_SPINP(b),XB(C)::QAR1(A),XP(b)
- R(d);::QAB1(A),XP(a)
- R(i);::QAB1(A),XP(a)
- Refutation
- P(a);XQ(A)
- Try
- Actual
- P(D);XP(g)
- Threat
- PXS(j)=S
- Vars
- R(d);OGATE,P_SPINB(e),XP(D)::QAR(A)+B(C),XR(d)
- P(b);OGATE,P_SPINP(b),XB(C)::QAR1(A),XP(b)
- R(d);SBLOCK::QAR(A)+B(C)
- B(e);P_SPINR(d),S_CUTR(i)::QAB(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).