MESON Chess Problem Database

Problem Display
PID: 91403 (2n5/2B5/3r2RK/3pkpQN/3r2p1/2Pqb1P1/6n1/4R1NB w - - 0 1)

Oey Mo Kiem

Probleemblad, 1975

2n5/2B5/3r2RK/3pkpQN/3r2p1/2Pqb1P1/6n1/4R1NB

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qf4#
    • 1...Sf4
      • 2.Qf6#
  • Tries
    • 1.Bxd6+?
      • 1...Ke4
        • 2.Sf6#
        • 2.Bxg2#
        • 2.Re6#
        • 2.Qf4#
      • 1...Sxd6!
    • 1.Rxe3+?
      • 1...Qe4
        • 2.Qf6#
      • 1...Re4
        • 2.Qf6#
      • 1...Sxe3
        • 2.Qf6#
      • 1...Qxe3!
  • Keys
    • 1.Sg7!
      • threat
        • 2.Re6#
      • 1...Ke4
        • 2.Qf4#
      • 1...Sf4
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(g);N_SPINP(h),N_SPINR(i),P-FLIGHT,P_SPINS(a)::QAR1(F)
    • S(a);N_PINQ(F)::QAB1(F)
  • Tries
    • Try
      • B(J);CHECK,N_SPINR(H),XR(i)
      • Refutation
        • S(j);XB(J)
    • Try
      • R(A);CHECK,N_SPINQ(F),XB(c)
      • Vars
        • Q(b);P_SPINQ(b)::QAB1(F)
        • R(d);N_SPINR(i),P_SPINR(d)::QAB1(F)
        • S(a);XR(A)::QAB1(F)
      • Refutation
        • Q(b);P_PINQ(F),XR(A)
  • Actual
    • S(G);
    • Threat
      • R1(H)
    • Vars
      • K(g);N_SPINP(h),N_SPINR(i),P-FLIGHT,P_SPINS(a)::QAR1(F)
      • S(a);N_PINQ(F)::QAB1(F)
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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).