MESON Chess Problem Database

Problem Display
PID: 243284 (4K3/4p1p1/4k3/1pP5/2P3P1/4b1n1/1BN1nRN1/3RQ3 w - - 0 1)

Andersen, Idon Bruno Hovedskou

Skakbladet, 1951

4K3/4p1p1/4k3/1pP5/2P3P1/4b1n1/1BN1nRN1/3RQ3

#2

10 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf2
      • 2.Sf4#
    • 1...Bf4
      • 2.Sxf4#
    • 1...Bxc5
      • 2.Sf4#
    • 1...Sc1
      • 2.Sf4#
    • 1...Sg1
      • 2.Sf4#
    • 1...Sf4
      • 2.Sxf4#
    • 1...Sf5
      • 2.gxf5#
  • Tries
    • 1.Rf6+?
      • 1...exf6
        • 2.Rd6#
      • 1...gxf6!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Re5#
      • 1...Bxf2
        • 2.Sf4#
      • 1...Bxc5
        • 2.Sf4#
      • 1...Bd4
        • 2.Sxd4#
      • 1...Bf4
        • 2.Sxf4#
      • 1...Sc3
        • 2.Sd4#
      • 1...Sd4
        • 2.Sxd4#
      • 1...Sf4
        • 2.Sxf4#
      • 1...Sf5
        • 2.gxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(b);N_GUARD,P_SPINS(a),XR(E)::S(F)
    • B(b);N_GUARD,P_SPINS(a)::S(F),XB(b)
    • B(b);N_GUARD,P_SPINS(a),XP(I)::S(F)
    • S(a);N_GUARD,P_SPINB(b)::S(F)
    • S(a);N_GUARD,P_SPINB(b)::S(F),XS(a)
    • S(c);OGATE::P(H),XS(c)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • P(f);XR(E)::R1(A)
      • Refutation
        • P(g);XR(E)
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • B(b);N_GUARD,P_SPINS(a),XR(E)::S(F)
      • B(b);N_GUARD,P_SPINS(a),XP(I)::S(F)
      • B(b);N_GUARD,P_SPINS(a)::S(D),XB(b)
      • B(b);N_GUARD,P_SPINS(a)::S(F),XB(b)
      • S(a);N_GUARD,P_SPINB(b)::S(D)
      • S(a);N_GUARD,P_SPINB(b)::S(D),XS(a)
      • S(a);N_GUARD,P_SPINB(b)::S(F),XS(a)
      • S(c);OGATE::P(H),XS(c)
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