MESON Chess Problem Database

Problem Display
PID: 263139 (5K2/prP2Q2/r1p3p1/2BPk1bR/3Rp1P1/7n/8/1b6 w - - 0 1)

Labai, Zoltan

1st Comm., SuperProblem, 2021

5K2/prP2Q2/r1p3p1/2BPk1bR/3Rp1P1/7n/8/1b6

#2

8 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8+
      • 2.cxb8Q#
      • 2.cxb8B#
    • 1...Sg1
      • 2.Rxg5#
    • 1...Sf2
      • 2.Rxg5#
    • 1...Sf4
      • 2.Rxg5#
      • 2.Qg7#
    • 1...e3
      • 2.Qe6#
      • 2.Qe7#
      • 2.Qg7#
    • 1...cxd5
      • 2.Rxd5#
    • 1...gxh5
      • 2.Qf5#
  • Tries
    • 1.Qxg6?
      • threat
        • 2.Qf5#
        • 2.Qd6#
      • 1...Rb8+
        • 2.cxb8Q#
        • 2.cxb8B#
      • 1...cxd5
        • 2.Qf5#
      • 1...e3
        • 2.Qd6#
        • 2.Qe6#
        • 2.Qg7#
      • 1...Kf4!
    • 1.Qe8+?
      • 1...Kf6
        • 2.Qe6#
        • 2.Qe7#
      • 1...Kf4!
    • 1.dxc6?
      • threat
        • 2.Rd5#
      • 1...Rb8+
        • 2.cxb8Q#
        • 2.cxb8B#
      • 1...Sf4
        • 2.Rxg5#
      • 1...e3
        • 2.Qe7#
      • 1...Ba2!
  • Keys
    • 1.Kg7!
      • threat
        • 2.Qf6#
      • 1...Rxc7
        • 2.Qxc7#
      • 1...cxd5
        • 2.Rxd5#
      • 1...gxh5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(j);CHECK,OGATE::PXR(j)=Q
    • S(b);N_GUARD::R(E),XB(e)
    • P(g);OGATE,XP(D)::R1(A),XP(g)
    • P(h);N_GUARD,N_SPINB(e),XR(E)::QAR1(G)
  • Tries
    • Try
      • Q(G);XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • R(j);CHECK,OGATE::PXR(j)=Q
        • P(g);XP(D)::QAR1(G)
      • Refutation
        • K(d);N_SPINB(e),P_SPINP(c),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Refutation
        • K(d);N_SPINB(e),P_SPINP(c),S_FLIGHT
    • Try
      • P(D);XP(g)
      • Threat
        • R1(A)
      • Vars
        • R(j);CHECK,OGATE::PXR(j)=Q
        • S(b);N_GUARD::R(E),XB(e)
        • P(c);::QAR2(G)
      • Refutation
        • B(a);
  • Actual
    • K(H);S_FLIGHT
    • Threat
      • QAB1(G)
    • Vars
      • R(j);OGATE,P_PINQ(G),XP(F)::QAB(G),XR(j)
      • P(g);OGATE,XP(D)::R1(A),XP(g)
      • P(h);N_GUARD,N_SPINB(e),XR(E)::QAR1(G)
HTML5 logo

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).