MESON Chess Problem Database

Problem Display
PID: 206340 (4b1nb/2K1p2Q/4Pk2/2pP4/4rN2/6PN/1R6/B6n w - - 0 1)

Schor, Laszlo

Comm., Centurini/Guidelli MT, 1925

4b1nb/2K1p2Q/4Pk2/2pP4/4rN2/6PN/1R6/B6n

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Re2#
    • 1...Re2
      • 2.Rxe2#
    • 1...Rb4
      • 2.Rxb4#
    • 1...Rxf4
      • 2.Rf2#
    • 1...Rxe6
      • 2.Rb6#
  • Tries
    • 1.Sh5+?
      • 1...Bxh5
        • 2.Rf2#
      • 1...Ke5!
    • 1.Re2+?
      • 1...Re5
        • 2.Bxe5#
      • 1...Rd4!
    • 1.Rf2+?
      • 1...Re5
        • 2.Sh5#
      • 1...Rd4!
    • 1.Qg6+?
      • 1...Ke5
        • 2.Re2#
      • 1...Bxg6!
    • 1.Qf7+?
      • 1...Ke5
        • 2.Re2#
      • 1...Bxf7!
  • Keys
    • 1.g4!
      • threat
        • 2.Qxh8#
      • 1...Ke5
        • 2.Re2#
      • 1...Rxf4
        • 2.Rf2#
      • 1...Rxe6
        • 2.Rb6#
      • 1...Bg7
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(d);S_FLIGHT::B(A)+R(B)
    • R(b);N_GUARD::B(A)+R(B),XR(b)
    • R(b);N_GUARD,XS(E)::B(A)+R(B)
    • R(b);N_GUARD,XP(G)::B(A)+R(B)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • B(f);XS(E)::B(A)+R(B),DCHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::B(A),XR(b)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • R(B);CHECK
      • Vars
        • R(b);P_SPINR(b)::R(B)+S(E),DCHECK
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • Q(I);CHECK
      • Vars
        • K(d);S_FLIGHT::B(A)+R(B)
      • Refutation
        • B(f);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(d);S_FLIGHT::B(A)+R(B)
      • Refutation
        • B(f);XQ(I)
  • Actual
    • P(C);
    • Threat
      • QAB(I),XB(h)
    • Vars
      • K(d);S_FLIGHT::B(A)+R(B)
      • R(b);N_GUARD,XS(E)::B(A)+R(B)
      • R(b);N_GUARD,XP(G)::B(A)+R(B)
      • B(h);SBLOCK::QAR1(I)
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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).