MESON Chess Problem Database

Problem Display
PID: 265335 (1B6/8/2q1p3/4p3/R1PkP3/6p1/3K4/2R1Q1b1 w - - 0 1)

Krizhanivsky, Vasil Viktorovich

The Problemist, 1994

1B6/8/2q1p3/4p3/R1PkP3/6p1/3K4/2R1Q1b1

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qxg1#
    • 1...Qxe4
      • 2.Ba7#
    • 1...Qb5
      • 2.cxb5#
    • 1...Qd5
      • 2.cxd5#
    • 1...Qe8
      • 2.Ba7#
    • 1...Qxc4
      • 2.Ba7#
      • 2.Rcxc4#
      • 2.Raxc4#
    • 1...Qd6
      • 2.c5#
    • 1...Qc7
      • 2.c5#
    • 1...Qc8
      • 2.c5#
    • 1...Bh2
      • 2.Qe3#
    • 1...Be3+
      • 2.Qxe3#
  • Tries
    • 1.Bxe5+?
      • 1...Kc5
        • 2.Qxg1#
      • 1...Kxe5!
    • 1.Ba7+?
      • 1...Qb6
        • 2.Bxb6#
      • 1...Qc5!
  • Keys
    • 1.Qxg3!
      • threat
        • 2.Qxe5#
      • 1...Be3+
        • 2.Qxe3#
      • 1...Kxe4
        • 2.Qg4#
      • 1...Kc5
        • 2.Qxg1#
      • 1...Qxe4
        • 2.Ba7#
      • 1...Qc5
        • 2.Qd3#
      • 1...Qb5
        • 2.cxb5#
      • 1...Qd5
        • 2.cxd5#
      • 1...Qd6
        • 2.c5#
      • 1...Qc7
        • 2.c5#
      • 1...Bh2
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(c);N_GUARD,S_FLIGHT::QAB(B),XB(a)
    • Q(e);N_GUARD,XP(F)::B(G)
    • Q(e);OGATE::R(D)+P(E),XQ(e)
    • Q(e);N_GUARD::B(G)
    • Q(e);N_GUARD::R(D)+P(E)
    • B(a);N_GUARD::QAB1(B)
    • B(a);CHECK,N_GUARD::QAB1(B),XB(a)
  • Tries
    • Try
      • B(G);CHECK,XP(d)
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAB(B),XB(a)
      • Refutation
        • K(c);S_FLIGHT,XB(G)
    • Try
      • B(G);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e)::B(G),XQ(e)
      • Refutation
        • Q(e);P_SPINQ(e)
  • Actual
    • Q(B);XP(b)
    • Threat
      • QAB1(B),XP(d)
    • Vars
      • B(a);CHECK,N_GUARD::QAB1(B),XB(a)
      • K(c);OGATEB,P-FLIGHT,XP(F)::QAR2(B)
      • K(c);N_GUARD,S_FLIGHT::QAB(B),XB(a)
      • Q(e);N_GUARD,SBLOCK,XP(F)::B(G)
      • Q(e);SBLOCK::QAR1(B)
      • Q(e);OGATE::R(D)+P(E),XQ(e)
      • Q(e);N_GUARD::R(D)+P(E)
      • B(a);N_GUARD::QAB1(B)
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