MESON Chess Problem Database
Problem Display
PID: 265999 (3n4/5p2/2r1PPp1/1P1k4/2N1RP2/B2pP3/1n3N2/1K5Q w - - 0 1)
Witt, Andreas
StrateGems, 2022
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxc4
- 2.Re5#
- 1...Rb6
- 2.Sxb6#
- 1...Rxe6
- 2.Rd4#
- 1...Rc7
- 2.Sb6#
- 1...Rc8
- 2.Sb6#
- 1...Sxc4
- 2.Re5#
- 1...Sxe6
- 2.Rd4#
- 1...fxe6
- 2.Rd4#
- 1...Rxc4
- Tries
- 1.Qc1?
- threat
- 2.Re5#
- 1...Rxe6
- 2.Rd4#
- 1...Sxc4!
- threat
- 1.Qh3?
- threat
- 2.Rd4#
- 1...Rxc4
- 2.Re5#
- 1...Sxe6!
- threat
- 1.Qh5+?
- 1...g5
- 2.Qxg5#
- 1...gxh5!
- 1...g5
- 1.Qc1?
- Keys
- 1.Qg2!
- threat
- 2.Qg5#
- 1...Rxe6
- 2.Rd4#
- 1...Sxc4
- 2.Re5#
- 1...Sxe6
- 2.Rd4#
- 1...fxe6
- 2.Rd4#
- 1...g5
- 2.Qxg5#
- threat
- 1.Qg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(d);SBLOCK,XS(F)::QAB(B)+R(G),DCHECK
- R(d);N_GUARD::S(F),XR(d)
- R(d);SBLOCK,XP(J)::QAB(B)+R(G),DCHECK
- R(d);N_GUARD::S(F)
- S(a);SBLOCK,XS(F)::QAB(B)+R(G),DCHECK
- S(g);SBLOCK,XP(J)::QAB(B)+R(G),DCHECK
- P(f);SBLOCK,XP(J)::QAB(B)+R(G),DCHECK
- Tries
- Try
- Q(B);
- Threat
- R1(G)
- Vars
- R(d);SBLOCK,XP(J)::R1(G)
- Refutation
- S(a);XS(F)
- Try
- Q(B);
- Threat
- R1(G)
- Vars
- R(d);SBLOCK,XS(F)::R1(G)
- Refutation
- S(g);XP(J)
- Try
- Q(B);CHECK
- Vars
- P(e);P_SPINP(e)::QAR(B),XP(e)
- Refutation
- P(e);XQ(B)
- Try
- Actual
- Q(B);
- Threat
- QAR(B)
- Vars
- R(d);SBLOCK,XP(J)::QAB(B)+R(G),DCHECK
- S(a);SBLOCK,XS(F)::QAB(B)+R(G),DCHECK
- S(g);SBLOCK,XP(J)::QAB(B)+R(G),DCHECK
- P(f);SBLOCK,XP(J)::QAB(B)+R(G),DCHECK
- P(e);::QAR(B),XP(e)
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).