MESON Chess Problem Database

Problem Display
PID: 99733 (5K2/4P3/2P2p2/1RPk1N2/Qb6/1R3NPB/8/8 w - - 0 1)

Kovacs, Janos

Magyar Sakkszovetseg, 1975

5K2/4P3/2P2p2/1RPk1N2/Qb6/1R3NPB/8/8

#2

11 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Se3#
  • Tries
    • 1.R3xb4?
      • 1...Ke6
        • 2.Qb3#
        • 2.Qa2#
      • 1...Kxc6!
    • 1.R5xb4?
      • 1...Kxc5
        • 2.Qb5#
      • 1...Ke6!
    • 1.Qxb4?
      • 1...Ke6
        • 2.Qc4#
        • 2.Qe4#
      • 1...Kxc6!
    • 1.e8Q?
      • threat
        • 2.Se3#
      • 1...Kc4
        • 2.Se3#
        • 2.Qf7#
        • 2.Qe4#
        • 2.Qe6#
      • 1...Bd2
        • 2.Se7#
        • 2.Rd3#
        • 2.Qd7#
        • 2.Qd4#
        • 2.Qae4#
        • 2.Qee4#
      • 1...Bxc5+!
  • Keys
    • 1.e8S!
      • 1...Bxc5+
        • 2.Se7#
      • 1...Kc4
        • 2.Se3#
      • 1...Ke4
        • 2.Sxf6#
      • 1...Kxc6
        • 2.Se7#
      • 1...Ke6
        • 2.Sc7#
      • 1...Be1
        • 2.Se7#
      • 1...Bd2
        • 2.Se7#
      • 1...Ba3
        • 2.Se7#
      • 1...Bc3
        • 2.Se7#
      • 1...Ba5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINB(a),S_FLIGHT::S(H)
  • Tries
    • Try
      • R(A);XB(a)
      • Refutation
        • K(b);S_FLIGHT,XP(I)
    • Try
      • R(F);XB(a)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(G)::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);XB(a)
      • Refutation
        • K(b);S_FLIGHT,XP(I)
    • Try
      • P(J);P_SPINP(G)
      • Threat
        • S(H)
      • Refutation
        • B(a);CHECK,P_SPINB(a),XP(G)
  • Actual
    • P(J);P_SPINP(G)
    • Vars
      • B(a);CHECK,P_SPINB(a),XP(G)::S(H)
      • K(b);P_SPINB(a),S_FLIGHT::S(H)
      • K(b);P_SPINB(a),S_FLIGHT::S(J),XP(c)
      • K(b);S_FLIGHT,XP(I)::S(H)
      • K(b);S_FLIGHT::S(J)
      • B(a);N_PINP(G)::S(H)
      • B(a);::S(H)
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