MESON Chess Problem Database

Problem Display
PID: 46440 (4K3/5p2/4N3/3k4/8/1R4Q1/8/8 w - - 0 1)

Tomasevic, Milos

Mat Plus, 1996

4K3/5p2/4N3/3k4/8/1R4Q1/8/8

#2

4 + 2

4883 Still More Fun with Chess Miniatures 2002
145 StrateGems 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qd3#
  • Tries
    • 1.Qe5+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Kc6
        • 2.Sd4#
        • 2.Sd8#
        • 2.Qc5#
      • 1...Kxe5!
    • 1.Qg5+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Ke4
        • 2.Re3#
      • 1...Kc6
        • 2.Qc5#
      • 1...Kd6
        • 2.Rb6#
      • 1...Kxe6
        • 2.Rb6#
      • 1...f5!
  • Keys
    • 1.Rb5+!
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Re5#
      • 1...Kc6
        • 2.Sd4#
      • 1...Kxe6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
        • K(a);S_FLIGHT::R1(A)
        • K(a);OGATE,S_FLIGHT::QAR1(B)
        • K(a);P-FLIGHT::R(A)
        • K(a);S_FLIGHT,XS(C)::R(A)
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • R(A);CHECK
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);OGATE,S_FLIGHT::R1(A)
      • K(a);S_FLIGHT::S(C)
      • K(a);S_FLIGHT,XS(C)::QAR1(B)
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