MESON Chess Problem Database

Problem Display
PID: 106085 (8/8/1P1RP2Q/KpkPb2p/2NN4/1P3b1q/8/B7 w - - 0 1)

Fedyakov, Sergey

Shakhmatnaya kompozitsiya, 1992

8/8/1P1RP2Q/KpkPb2p/2NN4/1P3b1q/8/B7

#2

10 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe6
      • 2.Sxe6#
  • Tries
    • 1.Se3?
      • threat
        • 2.Rc6#
      • 1...Kxd6
        • 2.Qf8#
      • 1...Bxd5
        • 2.Rxd5#
      • 1...Bxd6
        • 2.b4#
      • 1...Qxe6!
    • 1.Qc1?
      • threat
        • 2.b4#
      • 1...Bxd6
        • 2.Se3#
      • 1...bxc4
        • 2.Qa3#
      • 1...b4!
    • 1.Qd2?
      • threat
        • 2.Qb4#
      • 1...b4
        • 2.Qxb4#
      • 1...Bxd6!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qc8#
      • 1...Qxe6
        • 2.Sxe6#
      • 1...Bxd5
        • 2.Rc6#
      • 1...Bxd6
        • 2.Qxd6#
      • 1...bxc4
        • 2.b4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(b);XP(I)::S(D),XQ(b)
  • Tries
    • Try
      • S(C);
      • Threat
        • R1(H)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XR(H)::QAB(J)
        • B(a);OGATE,XP(F)::R1(H),XB(a)
        • B(e);SBLOCK,XR(H)::P(B)
      • Refutation
        • Q(b);XP(I)
    • Try
      • Q(J);
      • Threat
        • P(B)
      • Vars
        • B(e);SBLOCK,XR(H)::QAR(J)+S(C)
        • P(c);N_GUARD,P_SPINP(c),XS(C)::QAB(J)
      • Refutation
        • P(c);
    • Try
      • Q(J);
      • Threat
        • QAB1(J)
      • Vars
        • P(c);::QAB1(J),XP(c)
      • Refutation
        • B(e);XR(H)
  • Actual
    • Q(J);
    • Threat
      • QAR(J)
    • Vars
      • Q(b);XP(I)::S(D),XQ(b)
      • B(a);SBLOCK,XP(F)::QAB(J)+R(H),DCHECK
      • B(e);OGATE,P_SPINB(e),XR(H)::QAB1(J),XB(e)
      • P(c);SBLOCK,XS(C)::P(B)
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