MESON Chess Problem Database

Problem Display
PID: 74947 (5K2/2QppR2/2n1k3/8/4B3/8/8/8 w - - 0 1)

Turevski, Dmitri Evgenevich

Problem Online, 2007

5K2/2QppR2/2n1k3/8/4B3/8/8/8

#2

4 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Bf5#
  • Tries
    • 1.Bxc6?
      • 1...d6
        • 2.Qxe7#
      • 1...d5
        • 2.Bd7#
        • 2.Qxe7#
      • 1...dxc6!
    • 1.Rxe7+?
      • 1...Kf6
        • 2.Qf4#
      • 1...Sxe7!
    • 1.Qf4?
      • 1...d5
        • 2.Bf5#
      • 1...d6
        • 2.Qf5#
      • 1...Sb4
        • 2.Rxe7#
      • 1...Sd4
        • 2.Rxe7#
      • 1...Sa5
        • 2.Rxe7#
      • 1...Sa7
        • 2.Rxe7#
      • 1...Sb8
        • 2.Rxe7#
      • 1...Sd8
        • 2.Rxe7#
      • 1...Se5!
    • 1.Qxd7+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Kxd7!
  • Keys
    • 1.Rf5!
      • 1...Sb4
        • 2.Qe5#
      • 1...Sd4
        • 2.Qe5#
      • 1...Sa5
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sa7
        • 2.Qe5#
      • 1...Sb8
        • 2.Qe5#
      • 1...Sd8
        • 2.Qe5#
      • 1...d5
        • 2.Qxc6#
      • 1...d6
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::B(A)
  • Tries
    • Try
      • B(A);XS(a)
      • Vars
        • P(c);OGATE::QAR1(B),XP(d)
      • Refutation
        • P(c);XB(A)
    • Try
      • R(C);CHECK,XP(d)
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
      • Refutation
        • S(a);XR(C)
    • Try
      • Q(B);
      • Vars
        • P(c);SBLOCK::B(A)
        • P(c);SBLOCK::QAB1(B)
        • S(a);N_GUARD::R1(C),XP(d)
      • Refutation
        • S(a);
    • Try
      • Q(B);CHECK,XP(c)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);P_SPINP(d),S_FLIGHT,XQ(B)
  • Actual
    • R(C);
    • Vars
      • S(a);N_GUARD::QAR1(B)
      • S(a);N_GUARD::QAR1(B),XS(a)
      • P(c);N_GUARD::QAR2(B),XS(a)
      • P(c);OGATEB,SBLOCK::QAB(B)
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