MESON Chess Problem Database

Problem Display
PID: 74432 (1B4n1/8/K1pN1p2/5P2/R1n2k1P/p1P1R2P/r1P1b2b/2Q4B w - - 0 1)

Selivanov, Andrei Vladimirovich

Kubok Ural Problemist Solving Ty., 2007

1B4n1/8/K1pN1p2/5P2/R1n2k1P/p1P1R2P/r1P1b2b/2Q4B

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Rxc4#
    • 1...Bg4
      • 2.Rxc4#
    • 1...Bh5
      • 2.Rxc4#
    • 1...Bg3
      • 2.Rxe2#
      • 2.Re4#
      • 2.Re6#
      • 2.Re7#
      • 2.Re8#
  • Tries
    • 1.Be4?
      • threat
        • 2.Sxc4#
      • 1...Sb2+
        • 2.Sc4#
        • 2.Sb5#
      • 1...Sd2+
        • 2.Sc4#
      • 1...Sxe3+
        • 2.Sb5#
      • 1...Sa5+
        • 2.Sc4#
        • 2.Sb5#
      • 1...Se5+
        • 2.Rd3#
      • 1...Sb6+
        • 2.Sc4#
        • 2.Sb5#
      • 1...Sxd6+
        • 2.Bd3#
      • 1...Ke5
        • 2.Sxc4#
        • 2.Sf7#
      • 1...Rb2!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Re4#
      • 1...Kxe3
        • 2.Sxc4#
      • 1...Bd3
        • 2.Rf3#
        • 2.Qf2#
      • 1...Bf3
        • 2.Rxf3#

This is a version of 21187

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(b);N_GUARD::R(G),XS(e)
  • Tries
    • Try
      • B(B);N_PINS(e)
      • Threat
        • B(L)+S(K),XS(e)
      • Vars
        • S(e);CHECK::B(L)+S(K)
        • S(e);CHECK,N_GUARD,P_SPINS(e),XR(E)::B(L)+S(K)
        • S(e);CHECK,N_GUARD,SBLOCK::QAB(A)+R(E)
        • S(e);CHECK,OGATEB,P_SPINS(e),XS(K)::R(G)+B(B)
      • Refutation
        • R(a);
  • Actual
    • Q(A);
    • Threat
      • R1(E)
    • Vars
      • K(f);N_SPINS(e),P_SPINB(b),S_FLIGHT,XR(E)::S(K),XS(e)
      • B(b);N_GUARD::R1(E),XB(b)
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