MESON Chess Problem Database

Problem Display
PID: 227204 (1K1R4/2PN3P/7p/Np1bR2r/1p1kp1P1/6bq/3BP3/2r1n2B w - - 0 1)

Terebesi, Michael

1st Place, Match: Israel - Switzerland, 1960

1K1R4/2PN3P/7p/Np1bR2r/1p1kp1P1/6bq/3BP3/2r1n2B

#2

11 + 11

15257 Kunstwerke auf 64 Feldern (1922-1966) (Ott, Kummer, Schudel) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Sb3#
    • 1...Bc4
      • 2.Sc6#
    • 1...Sd3
      • 2.e3#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Rdxd5#
      • 1...Kc5
        • 2.Be3#
      • 1...Rxe5
        • 2.Sb3#
      • 1...Rc5
        • 2.Rxe4#
      • 1...Kxe5!
    • 1.Sf8?
      • threat
        • 2.Rdxd5#
      • 1...Kc5
        • 2.Be3#
      • 1...Kxe5
        • 2.h8Q#
        • 2.h8B#
      • 1...Bxe5
        • 2.Se6#
      • 1...Rc5
        • 2.Rxe4#
      • 1...Rxe5!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Rdxd5#
      • 1...Kxc5
        • 2.Be3#
      • 1...Kxe5
        • 2.h8Q#
        • 2.h8B#
      • 1...Rxc5
        • 2.Rxe4#
      • 1...Rxe5
        • 2.Scb3#
      • 1...Bxe5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(a);SBLOCK,S_CUTB(i)::S(E)
    • B(i);N_GUARD,SBLOCK,S_CUTR(a)::S(E)
    • S(b);SBLOCK::P(C)
  • Tries
    • Try
      • S(H);P_PINB(i)
      • Threat
        • R1(K),XB(i)
      • Vars
        • K(f);S_FLIGHT::B(B)
        • R(j);SBLOCK,XR(F)::S(E)
        • R(a);SBLOCK::R1(F),XP(g)
      • Refutation
        • K(f);N_SPINB(i),S_FLIGHT,XR(F)
    • Try
      • S(H);P_PINB(i)
      • Threat
        • R1(K),XB(i)
      • Vars
        • K(f);S_FLIGHT::B(B)
        • K(f);N_SPINB(i),S_FLIGHT,XR(F)::P=Q
        • B(c);P_PINP(G),SBLOCK,XR(F)::S(H)
        • R(a);SBLOCK::R1(F),XP(g)
      • Refutation
        • R(j);XR(F)
  • Actual
    • S(H);P_PINB(i)
    • Threat
      • R1(K),XB(i)
    • Vars
      • K(f);S_FLIGHT,XS(H)::B(B)
      • K(f);N_SPINB(i),S_FLIGHT,XR(F)::P=Q
      • R(a);SBLOCK,XS(H)::R1(F),XP(g)
      • R(j);SBLOCK,XR(F)::S(H)
      • B(c);P_PINP(G),SBLOCK,XR(F)::S(H)
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