MESON Chess Problem Database

Problem Display
PID: 54142 (r7/4NNBk/7P/p5K1/5p2/3R4/3P1PpP/1B4q1 w - - 0 1)

Visserman, Eeltje

Schakend Nederland, 1960

r7/4NNBk/7P/p5K1/5p2/3R4/3P1PpP/1B4q1

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf2
      • 2.Ra3#
      • 2.Rb3#
      • 2.Rc3#
      • 2.Re3#
      • 2.Rf3#
      • 2.Rg3#
      • 2.Rh3#
      • 2.Rd4#
      • 2.Rd5#
      • 2.Rd6#
      • 2.Rd7#
      • 2.Rd8#
    • 1...Qxh2
      • 2.Ra3#
      • 2.Rb3#
      • 2.Rc3#
      • 2.Re3#
      • 2.Rf3#
      • 2.Rg3#
      • 2.Rh3#
      • 2.Rd4#
      • 2.Rd5#
      • 2.Rd6#
      • 2.Rd7#
      • 2.Rd8#
  • Tries
    • 1.Kxf4?
      • threat
        • 2.Sg5#
      • 1...Qxf2+
        • 2.Rf3#
      • 1...Qxh2+
        • 2.Rg3#
      • 1...Rf8!
    • 1.Kh5?
      • threat
        • 2.Sg5#
      • 1...Qxh2+
        • 2.Rh3#
      • 1...Qd1+!
  • Keys
    • 1.Kh4!
      • threat
        • 2.Sg5#
      • 1...Qxf2+
        • 2.Rg3#
      • 1...Qxh2+
        • 2.Rh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(F);S_FLIGHT,XP(c)
      • Threat
        • S(I)
      • Vars
        • Q(a);CHECK,N_GUARD,XP(C)::B(A)+R(E)
        • Q(a);CHECK,N_GUARD,XP(D)::B(A)+R(E)
      • Refutation
        • R(f);P_PINS(I)
    • Try
      • K(F);P-FLIGHT
      • Threat
        • S(I)
      • Vars
        • Q(a);CHECK,N_GUARD,XP(D)::B(A)+R(E)
      • Refutation
        • Q(a);CHECK
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • S(I)
    • Vars
      • Q(a);CHECK,N_GUARD,XP(C)::B(A)+R(E)
      • Q(a);CHECK,N_GUARD,XP(D)::B(A)+R(E)
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