MESON Chess Problem Database

Problem Display
PID: 18888 (r6N/3R2B1/2P1k3/8/6P1/rN4K1/8/3Bn3 w - - 0 1)

Apro, Laszlo

1st HM., Sachove umeni (Ceskoslovensky sach), 1959

r6N/3R2B1/2P1k3/8/6P1/rN4K1/8/3Bn3

#2

8 + 4

3749 FIDE Album (1959-1961) 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sd4#
      • 2.Sc5#
    • 1...Ra2
      • 2.Sd4#
      • 2.Sc5#
    • 1...Rxb3+
      • 2.Bxb3#
    • 1...R3a4
      • 2.Sc5#
    • 1...R3a5
      • 2.Sd4#
    • 1...R3a6
      • 2.Sd4#
      • 2.Sc5#
    • 1...R3a7
      • 2.Sd4#
      • 2.Sc5#
    • 1...Sd3
      • 2.Sd4#
    • 1...Sf3
      • 2.Sc5#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Sf4#
      • 1...Rxb3+
        • 2.Bxb3#
      • 1...R3a4
        • 2.Sc5#
      • 1...R8a4
        • 2.Sf8#
      • 1...Rf8
        • 2.Sxf8#
      • 1...Sd3
        • 2.Sd4#
      • 1...Sg2!
    • 1.Bf3?
      • threat
        • 2.Sd4#
        • 2.Sc5#
        • 2.Bd5#
      • 1...Sxf3
        • 2.Sc5#
      • 1...R8a4
        • 2.Sc5#
        • 2.Bd5#
      • 1...R3a4
        • 2.Sc5#
        • 2.Bd5#
      • 1...R3a5
        • 2.Sd4#
      • 1...R8a5
        • 2.Sd4#
      • 1...Sc2
        • 2.Sc5#
        • 2.Bd5#
      • 1...Sd3
        • 2.Sd4#
        • 2.Bd5#
      • 1...Rxb3!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sg5#
      • 1...Rxb3+
        • 2.Bxb3#
      • 1...R3a5
        • 2.Sd4#
      • 1...R8a5
        • 2.Sd8#
      • 1...Sf3
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(b);CHECK,OGATE,XS(B)::B(A),XR(b)
    • R(b);N_PINS(B)::S(B)
    • S(a);N_PINS(B)::S(B)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • R(b);CHECK,OGATE,XS(B)::B(A),XR(b)
        • R(b);N_PINS(B)::S(B)
        • R(d);N_GUARD::S(H)
        • R(d);N_GUARD::S(H),XR(d)
        • S(a);N_PINS(B)::S(B)
      • Refutation
        • S(a);
    • Try
      • B(A);N_SPINS(B)
      • Threat
        • DUALS(3)
      • Vars
        • S(a);XB(A)::S(B)
        • R(b);::S(B)
        • R(d);::S(B)
      • Refutation
        • R(b);P_PINB(A),XS(B)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • R(b);CHECK,OGATE,XS(B)::B(A),XR(b)
      • R(b);N_PINS(B)::S(B)
      • R(d);N_GUARD::S(H)
      • S(a);N_PINS(B)::S(B)
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