MESON Chess Problem Database

Problem Display
PID: 173628 (8/K1Q3Bb/8/1pN1N2R/1k1n2r1/b4R2/BpP2q2/3n4 w - - 0 1)

Boros, Sandor

1st Prize, Tijdschrift vd KNSB, 1938

8/K1Q3Bb/8/1pN1N2R/1k1n2r1/b4R2/BpP2q2/3n4

#2

9 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc2
      • 2.Sc6#
      • 2.Rb3#
    • 1...Se2
      • 2.Sc6#
      • 2.Rb3#
    • 1...Sb3
      • 2.Rxb3#
    • 1...Sxf3
      • 2.Sc6#
    • 1...Sf5
      • 2.Sd3#
      • 2.Rb3#
    • 1...Sc6+
      • 2.Sxc6#
    • 1...Se6
      • 2.Sc6#
      • 2.Rb3#
  • Tries
    • 1.Sed3+?
      • 1...Kc3
        • 2.Se4#
      • 1...Bxd3!
    • 1.Qa5+?
      • 1...Kxc5
        • 2.Bf8#
      • 1...Kxa5!
  • Keys
    • 1.Bb3!
      • threat
        • 2.Sa6#
      • 1...Sc6+
        • 2.Sxc6#
      • 1...Sxc2
        • 2.Sc6#
      • 1...Sxb3
        • 2.Rxb3#
      • 1...Sxf3
        • 2.Sc6#
      • 1...Rg6
        • 2.Scd3#
      • 1...Se2
        • 2.Sc6#
      • 1...Sf5
        • 2.Sd3#
      • 1...Se6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD,P_PINS(D)::R1(C),XS(f)
    • S(f);N_GUARD,P_PINS(D),XR(C)::S(E)
    • S(f);CHECK,N_GUARD,P_PINS(D)::S(E),XS(f)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P_SPINS(f),S_FLIGHT::QAR(H)+S(D),DCHECK
      • Refutation
        • B(i);XS(E)
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);P_SPINP(h),S_FLIGHT,XS(D)::B(I)
      • Refutation
        • K(e);S_FLIGHT,XQ(H)
  • Actual
    • B(A);
    • Threat
      • S(D)
    • Vars
      • S(f);CHECK,N_GUARD,P_PINS(D)::S(E),XS(f)
      • S(f);N_GUARD,P_PINS(D),XP(B)::S(E)
      • S(f);OGATE,P_PINS(D),XB(A)::R1(C),XS(f)
      • S(f);N_GUARD,P_PINS(D),XR(C)::S(E)
      • R(g);S_CUTB(i)::S(D)
      • S(f);N_GUARD,P_PINS(D)::S(E)
      • S(f);P_PINS(D),S_CUTB(i)::S(E)
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