MESON Chess Problem Database
Problem Display
PID: 71417 (N1Rbk1K1/1p1rpp2/2r2P2/1B6/8/8/4Q3/8 w - - 0 1)
Eldridge, GC
Chess, 1951
#2
6 + 7
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Qxe7#
- 1...Rc2
- 2.Qxe7#
- 1...Rc3
- 2.Qxe7#
- 1...Rc4
- 2.Qxe7#
- 1...Rc5
- 2.Qxe7#
- 1...Ra6
- 2.Sc7#
- 2.Qxe7#
- 1...Rb6
- 2.Sc7#
- 2.Qxe7#
- 1...Rcd6
- 2.Sc7#
- 2.Qxe7#
- 1...Re6
- 2.Sc7#
- 1...Rxf6
- 2.Sc7#
- 1...Rcc7
- 2.Sxc7#
- 2.Qxe7#
- 1...Rd1
- 2.Qxe7#
- 1...Rd2
- 2.Qxe7#
- 1...Rd3
- 2.Qxe7#
- 1...Rd4
- 2.Qxe7#
- 1...Rd5
- 2.Qxe7#
- 1...Rdd6
- 2.Qxe7#
- 1...Rc1
- Tries
- 1.Sc7+?
- 1...Rcxc7
- 2.Qxe7#
- 1...Rdxc7!
- 1...Rcxc7
- 1.Bxc6?
- threat
- 2.Sc7#
- 2.Qxe7#
- 1...e5
- 2.Sc7#
- 2.Qxe5#
- 1...e6
- 2.Sc7#
- 1...bxc6!
- threat
- 1.Rxd8+?
- 1...Rxd8
- 2.Qxe7#
- 1...Kxd8!
- 1...Rxd8
- 1.Sc7+?
- Keys
- 1.Qe6!
- threat
- 2.Qxf7#
- 1...Rxe6
- 2.Sc7#
- 1...fxe6
- 2.f7#
- 1...Rd1
- 2.Sc7#
- 2.Qxe7#
- 1...Rd2
- 2.Sc7#
- 2.Qxe7#
- 1...Rd3
- 2.Sc7#
- 2.Qxe7#
- 1...Rd4
- 2.Sc7#
- 2.Qxe7#
- 1...Rd5
- 2.Sc7#
- 2.Qxe7#
- 1...Rdd6
- 2.Sc7#
- 2.Qxe7#
- 1...Rdc7
- 2.Sxc7#
- threat
- 1.Qe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- R(a);P_SPINR(c)::QAR1(A),XP(d)
- R(a);N_GUARD,N_SPINP(d),P_SPINR(c)::S(D)
- R(a);N_GUARD,P_SPINR(c),XP(C)::S(D)
- R(c);N_GUARD,P_SPINR(a)::QAR1(A),XP(d)
- Tries
- Try
- S(D);CHECK
- Vars
- R(a);P_SPINR(c),XS(D)::QAR1(A),XP(d)
- Refutation
- R(c);P_SPINR(a),XS(D)
- Try
- B(B);P_PINR(c),XR(a)
- Threat
- DUALS(2)
- Vars
- P(d);::S(D)
- Refutation
- P(b);N_SPINR(c),XB(B)
- Try
- R(E);CHECK,XB(f)
- Vars
- R(c);P_SPINR(a),XR(E)::QAR1(A),XP(d)
- Refutation
- K(g);N_SPINP(d),P-FLIGHT,XR(E)
- Try
- Actual
- Q(A);
- Threat
- QAB1(A),XP(e)
- Vars
- R(a);N_GUARD,N_SPINP(d),P_SPINR(c),XQ(A)::S(D)
- P(e);N_SPINP(d),OGATE,XQ(A)::P(C)
- R(c);N_GUARD,P_SPINR(a)::S(D),XR(c)
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).