MESON Chess Problem Database

Problem Display
PID: 142588 (8/1B2n3/2p1p3/2n1k3/3NN1P1/5K2/3B4/1Q1R4 w - - 0 1)

Bylevski, Aleksandr

Phenix, 1990

8/1B2n3/2p1p3/2n1k3/3NN1P1/5K2/3B4/1Q1R4

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Sxc6#
  • Tries
    • 1.Sxc6+?
      • 1...Sxc6
        • 2.Bf4#
      • 1...Kd5!
  • Keys
    • 1.Qb5!
      • 1...Kxd4
        • 2.Bc3#
      • 1...Kd5
        • 2.Qxc5#
      • 1...cxb5
        • 2.Bf4#
      • 1...Sd5
        • 2.Sxc6#
      • 1...Sf5
        • 2.Qxc5#
      • 1...Sg6
        • 2.Qxc5#
      • 1...Sc8
        • 2.Qxc5#
      • 1...Sg8
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD,SBLOCK::S(E),XP(c)
  • Tries
    • Try
      • S(E);CHECK,XP(c)
      • Vars
        • S(e);XS(E)::B(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);P_PINS(a)
    • Vars
      • K(b);N_SPINS(a),OGATEB,S_FLIGHT,XS(E)::R(B)+B(C),DCHECK
      • K(b);P-FLIGHT,P_SPINP(c)::QAR1(A),XS(a)
      • P(c);N_SPINS(a),XQ(A)::B(C)
      • S(e);N_GUARD,N_SPINS(a),SBLOCK::S(E),XP(c)
      • S(e);N_GUARD::QAR2(A),XS(a)
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