MESON Chess Problem Database

Problem Display
PID: 225679 (1bK5/4p2N/2BNkPPp/3Rp3/8/2n5/2Q5/1b6 w - - 0 1)

Pavlov, Mikhail Aleksandrovich

Praca, 1998

1bK5/4p2N/2BNkPPp/3Rp3/8/2n5/2Q5/1b6

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Qf5#
  • Tries
    • 1.Se8?
      • threat
        • 2.Sf8#
        • 2.Sg7#
      • 1...Bxc2
        • 2.Sg7#
      • 1...Sxd5
        • 2.Sf8#
        • 2.Bd7#
      • 1...Se4
        • 2.Sg7#
      • 1...exf6!
    • 1.Qb3?
      • threat
        • 2.Bd7#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...exf6!
    • 1.Qf2?
      • threat
        • 2.Sf8#
      • 1...exf6
        • 2.Qxf6#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Sxd5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sg7#
      • 1...Sxd5
        • 2.Bd7#
      • 1...exf6
        • 2.Sf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB1(A)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XQ(A)::S(D)
        • S(b);::S(D)
      • Refutation
        • P(f);XP(E)
    • Try
      • Q(A);
      • Threat
        • B(C)
      • Vars
        • S(b);OGATE,P_SPINS(b),XR(B)::QAB1(A),XS(b)
      • Refutation
        • P(f);XP(E)
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • P(f);OGATE,XP(E)::QAR1(A),XP(f)
        • B(a);N_GUARD::QAB1(A),XB(a)
      • Refutation
        • S(b);XR(B)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • S(b);SBLOCK,XR(B)::B(C)
      • P(f);SBLOCK,XP(E)::S(G)
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