MESON Chess Problem Database

Problem Display
PID: 264093 (1B1b3q/3n4/4p1p1/1R2nkP1/1p1R3P/3P1N1b/3K1PQr/1B6 w - - 0 1)

Felkai, Imre

Tijdschrift vd KNSB, 1938

1B1b3q/3n4/4p1p1/1R2nkP1/1p1R3P/3P1N1b/3K1PQr/1B6

#2

11 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh4
      • 2.Sxh4#
    • 1...Bg4
      • 2.Qxg4#
    • 1...Bxg5+
      • 2.Qxg5#
    • 1...Sf6
      • 2.Rxe5#
  • Tries
    • 1.Ke3?
      • threat
        • 2.Rf4#
      • 1...Bxg5+
        • 2.Qxg5#
      • 1...Qxh4
        • 2.Sxh4#
      • 1...Bb6!
    • 1.Re4?
      • threat
        • 2.Sd4#
      • 1...Bxg5+
        • 2.Qxg5#
      • 1...Bb6!
    • 1.Qg3?
      • threat
        • 2.Rf4#
        • 2.Qf4#
      • 1...Bxg5+
        • 2.Qxg5#
      • 1...Qxh4
        • 2.Sxh4#
      • 1...Rxf2+!
  • Keys
    • 1.Rbxb4!
      • threat
        • 2.Rf4#
      • 1...Bxg5+
        • 2.Qxg5#
      • 1...Sxf3+
        • 2.Qxf3#
      • 1...Sc4+
        • 2.dxc4#
      • 1...Qxh4
        • 2.Sxh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(j);XP(H)::S(F),XQ(j)
    • B(b);N_GUARD::QAB1(D),XB(b)
    • B(i);CHECK,OGATE,XP(J)::QAR1(D),XB(i)
    • S(h);N_GUARD,S_CUTQ(j)::R1(I),XS(d)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • R1(G)
      • Vars
        • B(i);CHECK,OGATE,XP(J)::QAR1(D),XB(i)
        • Q(j);XP(H)::S(F),XQ(j)
      • Refutation
        • B(i);P_PINR(G)
    • Try
      • R(G);
      • Threat
        • S(F)
      • Vars
        • B(i);CHECK,OGATE,XP(J)::QAR1(D),XB(i)
      • Refutation
        • B(i);
    • Try
      • Q(D);P_SPINP(C)
      • Threat
        • DUALS(2)
      • Vars
        • B(i);CHECK,OGATE,XP(J)::QAR1(D),XB(i)
        • Q(j);XP(H)::S(F),XQ(j)
      • Refutation
        • R(a);CHECK,XP(C)
  • Actual
    • R(I);N_PINS(d),XP(c)
    • Threat
      • R1(G)
    • Vars
      • B(i);CHECK,OGATE,XP(J)::QAR1(D),XB(i)
      • S(d);CHECK,OGATE,XS(F)::QAR2(D),XS(d)
      • S(d);CHECK,OGATE::B(A)+P(E),XS(d)
      • Q(j);XP(H)::S(F),XQ(j)
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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).