MESON Chess Problem Database

Problem Display
PID: 63141 (4nB2/KQ1ppp1B/1N1P1P2/pN1Pk3/1P3RpP/1nprb1P1/3qR3/8 w - - 0 1)

Bonivento, Oscar

Guida, Marco

The Problemist, 2005

4nB2/KQ1ppp1B/1N1P1P2/pN1Pk3/1P3RpP/1nprb1P1/3qR3/8

#2

14 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sxd7#
    • 1...Sd4
      • 2.Sc4#
      • 2.Sxd7#
    • 1...Sc5
      • 2.Sc4#
    • 1...exf6
      • 2.Re4#
  • Tries
    • 1.Kb8?
      • threat
        • 2.Sc4#
        • 2.Sxd7#
      • 1...Sxd6
        • 2.Sxd7#
      • 1...Sxf6
        • 2.Sc4#
      • 1...Rd4
        • 2.Sxd7#
      • 1...Sc5
        • 2.Sc4#
      • 1...Rxd5!
    • 1.Sd4?
      • threat
        • 2.Sc4#
      • 1...Kxd6
        • 2.Sc4#
      • 1...Sxd6
        • 2.Sxd7#
      • 1...Rxd4!
    • 1.Rxe3+?
      • 1...Rxe3
        • 2.Sc4#
        • 2.Sxd7#
      • 1...Qxe3!
    • 1.Rd4?
      • threat
        • 2.Sxd7#
      • 1...Kxf6
        • 2.Sxd7#
      • 1...Sxf6
        • 2.Sc4#
      • 1...Sc5!
  • Keys
    • 1.Bxe7!
      • threat
        • 2.Re4#
      • 1...Sxd6
        • 2.Bxd6#
      • 1...Sxf6
        • 2.Bxf6#
      • 1...Rd4
        • 2.Sxd7#
      • 1...Sc5
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(d);N_PINS(H)::S(H),XP(i)
    • S(b);N_PINS(H)::S(H)
    • P(j);SBLOCK,XP(J)::R1(D)
  • Tries
    • Try
      • K(K);N_SPINS(H),S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(l);XP(I)::S(H),XP(i)
        • S(l);XP(J)::S(H)
        • R(d);::S(H),XP(i)
        • S(b);::S(H)
      • Refutation
        • R(d);XP(G)
    • Try
      • S(F);N_SPINS(H)
      • Threat
        • S(H)
      • Vars
        • K(h);N_SPINB(e),P_SPINP(j),S_FLIGHT,XP(I)::S(H)
        • S(l);SBLOCK,XP(I)::S(H),XP(i)
      • Refutation
        • R(d);XS(F)
    • Try
      • R(A);CHECK,N_SPINS(H),XB(e)
      • Refutation
        • Q(a);P_PINS(H),XR(A)
    • Try
      • R(D);N_SPINS(H)
      • Threat
        • S(H),XP(i)
      • Vars
        • K(h);N_SPINB(e),S_FLIGHT,XP(J)::S(H),XP(i)
        • S(l);SBLOCK,XP(J)::S(H)
      • Refutation
        • S(b);
  • Actual
    • B(N);XP(j)
    • Threat
      • R1(D)
    • Vars
      • S(l);OGATE,XP(I)::B(N),XS(l)
      • S(l);OGATE,XP(J)::B(N),XS(l)
      • R(d);N_PINS(H)::S(H),XP(i)
      • S(b);N_PINS(H)::S(H)
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