MESON Chess Problem Database

Problem Display
PID: 39222 (8/8/p7/R1NB4/2qB4/P1p5/5P2/k1KN1R2 w - - 0 1)

Lindner, Laszlo

Magyar Hirlap, 1932

8/8/p7/R1NB4/2qB4/P1p5/5P2/k1KN1R2

#2

9 + 4

4080 Mattbilder eines Lebens 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf1
      • 2.Bxc3#
    • 1...Qa4
      • 2.Bxc3#
    • 1...Qb4
      • 2.axb4#
  • Tries
    • 1.Bxc3+?
      • 1...Ka2
        • 2.Bxc4#
      • 1...Qxc3+!
  • Keys
    • 1.Sxc3!
      • 1...Qxf1+
        • 2.Sd1#
      • 1...Qxc3+
        • 2.Bxc3#
      • 1...Qxd5
        • 2.Kc2#
      • 1...Qxd4
        • 2.Sb3#
      • 1...Qxc5
        • 2.Kc2#
      • 1...Qa2
        • 2.Sxa2#
      • 1...Qe2
        • 2.Sxe2#
        • 2.Sb3#
      • 1...Qb3
        • 2.Sxb3#
      • 1...Qd3
        • 2.Sb3#
      • 1...Qb5
        • 2.Sxb5#
      • 1...Qa4
        • 2.S3xa4#
      • 1...Qb4
        • 2.axb4#

This is a version

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_GUARD,P_PINS(B),XR(C)::B(F),XP(b)
    • Q(c);N_GUARD::B(F),XP(b)
    • Q(c);OGATE::R(G)+P(E),XQ(c)
  • Tries
    • Try
      • B(F);CHECK,P_SPINB(F),XP(b)
      • Vars
        • K(a);P-FLIGHT,P_SPINQ(c)::B(I),XQ(c)
      • Refutation
        • Q(c);CHECK,XB(F)
  • Actual
    • S(B);P_SPINS(B),XP(b)
    • Vars
      • Q(c);CHECK,N_PINS(B),XR(C)::B(F)+S(B)
      • Q(c);CHECK,OGATE,P_SPINQ(c),XS(B)::B(F),XQ(c)
      • Q(c);N_GUARD,N_PINS(B),XB(I)::R(C)+K(A)
      • Q(c);N_GUARD,N_PINS(B),XB(F)::S(H)
      • Q(c);N_GUARD,XS(H)::R(C)+K(A)
      • Q(c);N_PINS(B)::B(F)+S(B),XQ(c)
      • Q(c);N_GUARD,N_PINS(B)::S(H),XQ(c)
      • Q(c);N_GUARD,N_PINS(B)::S(H)
      • Q(c);N_PINS(B),OGATE::R(G)+P(E),XQ(c)
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