MESON Chess Problem Database

Problem Display
PID: 156410 (1qrnbB2/3P1k1N/2r2bRp/2p1P2K/B1N1P3/1R6/Q7/8 w - - 0 1)

Rezinkin, Valery Ivanovich

Best Problems, 2006

1qrnbB2/3P1k1N/2r2bRp/2p1P2K/B1N1P3/1R6/Q7/8

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.dxe8Q#
    • 1...Ra6
      • 2.dxe8Q#
    • 1...Rb6
      • 2.dxe8Q#
    • 1...Rd6
      • 2.dxe8Q#
    • 1...R6c7
      • 2.dxe8Q#
  • Tries
    • 1.Sd6+?
      • 1...Ke6
        • 2.dxe8Q#
      • 1...Rxd6
        • 2.dxe8Q#
      • 1...Qxd6!
    • 1.Rf3?
      • threat
        • 2.Sd6#
      • 1...Qxe5+
        • 2.Sxe5#
      • 1...Ke6
        • 2.dxe8Q#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Rd6
        • 2.Sxd6#
        • 2.dxe8Q#
      • 1...Re6
        • 2.Rg7#
      • 1...Se6
        • 2.Rfxf6#
      • 1...Qb3!
    • 1.Rxb8?
      • threat
        • 2.Sd6#
      • 1...Ke6
        • 2.dxe8Q#
      • 1...Rd6
        • 2.Sxd6#
        • 2.dxe8Q#
      • 1...Se6!
    • 1.dxe8B+?
      • 1...Ke6
        • 2.Rxf6#
      • 1...Kxe8!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Sd6#
      • 1...Qxe5+
        • 2.Sxe5#
      • 1...Ke6
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Re6
        • 2.dxe8Q#
        • 2.dxe8B#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Rd6
        • 2.Sxd6#
        • 2.dxe8Q#
      • 1...Se6
        • 2.d8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • K(e);P_PINR(H),P_SPINB(c),S_FLIGHT::PXB(i)=Q
    • R(b);::PXB(i)=Q
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);P_PINR(H),P_SPINB(c),S_FLIGHT::PXB(i)=Q
        • R(b);XS(D)::PXB(i)=Q
      • Refutation
        • Q(f);XS(D)
    • Try
      • R(B);P_PINB(c)
      • Threat
        • QAB(A)+S(D),DCHECK
      • Vars
        • Q(f);CHECK,XP(F)::QAB(A)+S(D),DCHECK,XQ(f)
        • K(e);P_PINR(H),S_FLIGHT::PXB(i)=Q
        • Q(f);::QAB(A)+S(D),DCHECK,XQ(f)
        • R(b);SBLOCK::R1(H)
        • S(h);S_CUTR(b)::R1(B),XB(c)
      • Refutation
        • Q(f);
    • Try
      • R(B);XQ(f)
      • Threat
        • QAB(A)+S(D),DCHECK
      • Vars
        • K(e);P_PINR(H),P_SPINB(c),S_FLIGHT::PXB(i)=Q
      • Refutation
        • S(h);
    • Try
      • P(I);CHECK,XB(i)
      • Vars
        • K(e);P_SPINB(c),S_FLIGHT::R1(H),XB(c)
      • Refutation
        • K(e);P_SPINR(b),S_FLIGHT,XB(I)
  • Actual
    • R(B);
    • Threat
      • QAB(A)+S(D),DCHECK
    • Vars
      • Q(f);CHECK,XP(F)::QAB(A)+S(D),DCHECK,XQ(f)
      • K(e);P_PINR(H),P_SPINB(c),S_FLIGHT::PXB(i)=Q
      • R(b);::PXB(i)=Q
      • Q(f);::QAB(A)+S(D),DCHECK,XQ(f)
      • S(h);OGATE::P=S
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