MESON Chess Problem Database

Problem Display
PID: 75173 (Q5B1/1p6/5P1P/4RPpK/5P2/6k1/3N1NP1/6B1 w - g5 0 1)

Junio, Noel Ferrer

a8Q, 2007

(First published on Mon Jan 8 2007)

Q5B1/1p6/5P1P/4RPpK/5P2/6k1/3N1NP1/6B1

#2

12 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Bh2#
    • 1...b5
      • 2.Qf3#
    • 1...b6
      • 2.Qf3#
  • Tries
    • 1.Kxg5?
      • 1...b5
        • 2.Sf1#
        • 2.Sh1#
        • 2.Re3#
        • 2.Qf3#
      • 1...b6
        • 2.Sf1#
        • 2.Sh1#
        • 2.Re3#
        • 2.Qf3#
      • 1...Kxg2!
    • 1.Sf1+?
      • 1...Kxf4
        • 2.Sd3#
        • 2.Bh2#
      • 1...Kxg2!
    • 1.Sde4+?
      • 1...Kxf4
        • 2.Sd3#
      • 1...Kxg2!
    • 1.Sh1+?
      • 1...Kxf4
        • 2.Bh2#
      • 1...Kxg2!
    • 1.Qxb7?
      • threat
        • 2.Qf3#
      • 1...Kxf4
        • 2.Bh2#
      • 1...g4!
    • 1.Qa3+?
      • 1...Kxf4
        • 2.Bh2#
        • 2.Qe3#
      • 1...Kxg2!
    • 1.fxg5?
      • 1...Kf4
        • 2.Bh2#
      • 1...b5
        • 2.Qf3#
      • 1...b6
        • 2.Qf3#
      • 1...Kxg2!
  • Keys
    • 1.fxg5 ep!
      • 1...Kxg2
        • 2.Rg5#
      • 1...Kxf4
        • 2.Bh2#
      • 1...b5
        • 2.Qf3#
      • 1...b6
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT,XP(E)::B(A)
    • P(c);OGATE::QAR1(K)
  • Tries
    • Try
      • K(H);P-FLIGHT,XP(b)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(c),XP(D)
    • Try
      • S(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(c),XP(D)
    • Try
      • S(B);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(E)::S(C)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • S(C);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(E)::B(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(c),XP(D)
    • Try
      • Q(K);XP(c)
      • Threat
        • QAR1(K)
      • Vars
        • K(a);S_FLIGHT,XP(E)::B(A)
      • Refutation
        • P(b);
    • Try
      • Q(K);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • P(E);XP(b)
      • Vars
        • K(a);S_FLIGHT::B(A)
        • P(c);OGATE::QAR1(K)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(c),XP(D)
  • Actual
    • P(G);EP,XP(b)
    • Vars
      • K(a);P-FLIGHT,P_SPINP(c),XP(D)::R(F)
      • K(a);S_FLIGHT,XP(E)::B(A)
      • P(c);OGATE::QAR1(K)
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