MESON Chess Problem Database
Problem Display
PID: 137778 (4K3/2p4n/3pkpR1/4Pp2/2P5/7p/1B5Q/8 w - - 0 1)
Rice, John Michael
British Chess Magazine, 2011
#2
6 + 7
SOLUTION
- SOUND
- Sets
- 1...Sg5
- 2.Rxf6#
- 1...Sf8
- 2.Rxf6#
- 1...f4
- 2.Qxh3#
- 1...dxe5
- 2.Qxe5#
- 1...Sg5
- Tries
- 1.Qh1?
- threat
- 2.Qd5#
- 1...f4
- 2.Qxh3#
- 1...d5
- 2.Qxd5#
- 2.cxd5#
- 1...c6!
- threat
- 1.Qd2?
- threat
- 2.Qd5#
- 1...d5
- 2.Qxd5#
- 2.cxd5#
- 1...c6
- 2.Qxd6#
- 1...f4!
- threat
- 1.Qe2?
- threat
- 2.exf6#
- 1...dxe5
- 2.Qxe5#
- 1...f4
- 2.Qg4#
- 1...Sg5
- 2.Rxf6#
- 1...d5!
- threat
- 1.exd6?
- threat
- 2.Qe5#
- 1...cxd6
- 2.Qe2#
- 1...f4!
- threat
- 1.Qh1?
- Keys
- 1.exf6!
- threat
- 2.Qe2#
- 1...Sxf6+
- 2.Rxf6#
- 1...f4
- 2.Qxh3#
- 1...d5
- 2.Qe5#
- 1...Sg5
- 2.f7#
- threat
- 1.exf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- S(g);N_GUARD::R1(E),XP(e)
- P(b);OGATEB::QAB(B),XP(a)
- P(c);OGATE,XP(D)::QAR1(B),XP(c)
- Tries
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- P(b);OGATEB::QAB(B),XP(a)
- Refutation
- P(f);
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- P(f);N_GUARD::QAR1(B),XP(c)
- Refutation
- P(b);
- Try
- Q(B);
- Threat
- QAR(B)+P(D),XP(e)
- Vars
- P(c);N_SPINP(e),OGATE,P_SPINP(c),XP(D)::QAR1(B),XP(c)
- P(b);OGATEB::QAB(B)
- S(g);N_GUARD::R1(E),XP(e)
- Refutation
- P(c);
- Try
- P(D);XP(c)
- Threat
- QAR1(B)
- Vars
- P(f);SBLOCK,XP(D)::QAR(B)
- Refutation
- P(b);
- Try
- Actual
- P(D);XP(e)
- Threat
- QAR(B)
- Vars
- S(g);CHECK,OGATE,P_SPINS(g),XP(D)::R1(E),XS(g)
- P(b);OGATEB::QAB(B),XP(a)
- P(c);N_GUARD::QAR1(B)
- S(g);N_GUARD::R(E)+P(D)
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).