MESON Chess Problem Database

Problem Display
PID: 35388 (4N3/4R1p1/4p2n/2K1k1bQ/4b2P/2P1R3/4N3/B4r2 w - - 0 1)

Reitman, Mark

Probleemblad, 1995

4N3/4R1p1/4p2n/2K1k1bQ/4b2P/2P1R3/4N3/B4r2

#2

9 + 7

3657 Izbrannie Shakhmatnie Zadachi Marka Reitmana 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qxg5#
    • 1...Rf5
      • 2.c4#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Rxe4#
      • 1...Kf4
        • 2.Qxg5#
      • 1...Rf4
        • 2.c4#
      • 1...Re1!
    • 1.Rxe4+?
      • 1...Kf5
        • 2.Sg3#
      • 1...Kxe4!
    • 1.Rxe6+?
      • 1...Kf5
        • 2.Sxg7#
      • 1...Kxe6!
    • 1.Qxg5+?
      • 1...Rf5
        • 2.c4#
      • 1...Sf5!
    • 1.c4+?
      • 1...Kf5
        • 2.Sd6#
        • 2.Sxg7#
        • 2.Qxg5#
      • 1...Rxa1!
  • Keys
    • 1.Sxg7!
      • threat
        • 2.Rxe6#
      • 1...Kf6
        • 2.Qxg5#
      • 1...Rf6
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(c);N_SPINB(b),N_SPINP(e),P-FLIGHT,P_SPINB(d)::QAR1(G),XB(d)
    • R(a);N_GUARD,SBLOCK::B(A)+P(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(D),XB(b)
      • Vars
        • K(c);N_SPINB(b),N_SPINP(e),S_FLIGHT::QAB1(G),XB(d)
        • R(a);N_GUARD,SBLOCK::B(A)+P(C)
      • Refutation
        • R(a);
    • Try
      • R(D);CHECK,P_PINB(d),XB(b)
      • Vars
        • K(c);N_SPINP(e),P-FLIGHT::S(B)
      • Refutation
        • K(c);N_SPINB(d),P-FLIGHT,XR(D)
    • Try
      • R(H);CHECK,XP(e)
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT,P_SPINB(d)::S(I),XP(g)
      • Refutation
        • K(c);P-FLIGHT,XR(H)
    • Try
      • Q(G);CHECK,XB(d)
      • Vars
        • R(a);P_SPINR(a)::B(A)+P(C)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • P(C);CHECK
      • Refutation
        • R(a);XB(A)
  • Actual
    • S(I);XP(g)
    • Threat
      • R1(H),XP(e)
    • Vars
      • K(c);N_SPINB(b),N_SPINP(e),S_FLIGHT::QAB1(G),XB(d)
      • R(a);N_GUARD,SBLOCK::B(A)+P(C)
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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).