MESON Chess Problem Database

Problem Display
PID: 174430 (5R2/b5Q1/4PP1n/1K2kP1N/7P/3p1p2/B2N1P2/4B3 w - - 0 1)

Krochek, Alexander

Variantim, 1992

5R2/b5Q1/4PP1n/1K2kP1N/7P/3p1p2/B2N1P2/4B3

#2

12 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.f7#
    • 1...Kxf5
      • 2.Qg5#
    • 1...Kd6
      • 2.Qg3#
  • Tries
    • 1.Rd8?
      • threat
        • 2.Rd5#
      • 1...Kxf5
        • 2.Qg5#
      • 1...Sxf5!
    • 1.Qg3+?
      • 1...Kxf5
        • 2.Sg7#
        • 2.Qg5#
      • 1...Kd4!
    • 1.Qxa7?
      • threat
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
        • 2.Qb8#
      • 1...Kxf5!
    • 1.Qc7+?
      • 1...Kd4
        • 2.Rd8#
      • 1...Kxf5!
    • 1.f7+?
      • 1...Kxf5
        • 2.Qg5#
      • 1...Kd6!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qd5#
      • 1...Kd4
        • 2.Sxf3#
      • 1...Kxf5
        • 2.Qe4#
      • 1...Kd6
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB(K)+P(J)
    • K(c);OGATEB,P-FLIGHT,XP(G)::QAR1(K)
    • K(c);S_FLIGHT::QAB(K)
  • Tries
    • Try
      • R(L);
      • Threat
        • R1(L)
      • Vars
        • K(c);OGATEB,P-FLIGHT,XP(G)::QAR1(K)
      • Refutation
        • S(d);XP(G)
    • Try
      • Q(K);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(K);XB(e)
      • Threat
        • QAR2(K)
      • Refutation
        • K(c);P-FLIGHT,XP(G)
    • Try
      • Q(K);CHECK
      • Vars
        • K(c);S_FLIGHT::R(L)
      • Refutation
        • K(c);P-FLIGHT,XP(G)
    • Try
      • P(J);CHECK
      • Vars
        • K(c);OGATEB,P-FLIGHT,XP(G)::QAR1(K)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(K);
    • Threat
      • QAR1(K)
    • Vars
      • K(c);S_FLIGHT::S(C),XP(b)
      • K(c);P-FLIGHT,XP(G)::QAB1(K)
      • K(c);S_FLIGHT::S(C)
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