MESON Chess Problem Database

Problem Display
PID: 277978 (3K1N2/p2p1k2/Q2P2NB/RP6/8/8/8/8 w - - 0 1)

Haralovic, Mato

diagrammes, 1981

3K1N2/p2p1k2/Q2P2NB/RP6/8/8/8/8

#2

8 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Ra2?
      • 1...Kf6
        • 2.Rf2#
      • 1...Kg8!
    • 1.Ra3?
      • 1...Kf6
        • 2.Rf3#
      • 1...Kg8!
    • 1.Ra4?
      • 1...Kf6
        • 2.Rf4#
      • 1...Kg8!
    • 1.Qb7?
      • 1...Kf6
        • 2.Qf3#
      • 1...Kg8
        • 2.Qd5#
      • 1...a6!
    • 1.Qxa7?
      • 1...Kf6
        • 2.Qf2#
      • 1...Kg8!
    • 1.b6?
      • 1...Kf6
        • 2.Qf1#
      • 1...Kg8
        • 2.Qc4#
      • 1...axb6!
  • Keys
    • 1.Ra1!
      • 1...Kf6
        • 2.Rf1#
      • 1...Kg8
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Vars
        • K(c);N_GUARD,P-FLIGHT::R(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(c);N_GUARD,P-FLIGHT::R(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(c);N_GUARD,P-FLIGHT::R(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);P_PINP(b)
      • Vars
        • K(c);N_GUARD,N_SPINP(b),P-FLIGHT::QAR(C)
        • K(c);N_GUARD,N_SPINP(b),S_FLIGHT::QAB(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);P_PINP(b),XP(a)
      • Vars
        • K(c);N_GUARD,N_SPINP(b),P-FLIGHT::QAR(C)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • P(B);
      • Vars
        • K(c);N_GUARD,P-FLIGHT::QAR(C)
        • K(c);N_GUARD,S_FLIGHT::QAB(C)
      • Refutation
        • P(a);XP(B)
  • Actual
    • R(A);
    • Vars
      • K(c);N_GUARD,P-FLIGHT::R(A)
      • K(c);N_GUARD,S_FLIGHT::QAB(C)
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