MESON Chess Problem Database

Problem Display
PID: 35392 (4K2Q/3p2N1/4p1n1/3kP3/1PR1R1P1/1P6/p7/1b3n2 w - - 0 1)

Reitman, Mark

US Problem Bulletin, 1995

4K2Q/3p2N1/4p1n1/3kP3/1PR1R1P1/1P6/p7/1b3n2

#2

9 + 7

3657 Izbrannie Shakhmatnie Zadachi Marka Reitmana 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe5
      • 2.Red4#
  • Tries
    • 1.Sh5?
      • threat
        • 2.Sf6#
        • 2.Red4#
      • 1...Sxe5
        • 2.Red4#
        • 2.Qxe5#
      • 1...Sxh8
        • 2.Sf4#
        • 2.Sf6#
      • 1...a1Q
        • 2.Sf6#
      • 1...a1B
        • 2.Sf6#
      • 1...Bxe4!
    • 1.Qh1?
      • threat
        • 2.Rc5#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Sxe5
        • 2.Red4#
      • 1...d6!
  • Keys
    • 1.Sxe6!
      • threat
        • 2.Sc7#
      • 1...Kxe6
        • 2.Qg8#
      • 1...Sxe5
        • 2.Qxe5#
      • 1...dxe6
        • 2.Red4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(f);SBLOCK,XP(F)::R1(D)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::S(G)
      • Refutation
        • B(a);XR(D)
    • Try
      • Q(I);
      • Threat
        • R1(C)
      • Vars
        • B(a);OGATE,P_SPINB(a),XR(D)::QAB1(I),XB(a)
        • S(f);SBLOCK,XP(F)::QAB(I)+R(D),DCHECK
      • Refutation
        • P(g);
  • Actual
    • S(G);XP(e)
    • Threat
      • S(G)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(G)::QAB(I)
      • S(f);OGATE,XP(F)::QAR1(I),XS(f)
      • P(g);SBLOCK,XS(G)::R1(D)
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