MESON Chess Problem Database

Problem Display
PID: 133600 (4RBQb/n3pK1p/4p1N1/1p2PN2/1Pkp4/1R6/PP6/5n1B w - - 0 1)

Rice, John Michael

The Problemist, 1975

4RBQb/n3pK1p/4p1N1/1p2PN2/1Pkp4/1R6/PP6/5n1B

#2

12 + 9

5174 Chess Problem Spectrum 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Sxe5#
    • 1...Sc8
      • 2.Rxc8#
    • 1...exf5
      • 2.Kxe7#
  • Tries
    • 1.Kxe6?
      • threat
        • 2.Kxe7#
        • 2.Bd5#
      • 1...Bf6
        • 2.Bd5#
      • 1...Sc6
        • 2.Bd5#
      • 1...Sc8
        • 2.Bd5#
        • 2.Rxc8#
      • 1...Se3!
    • 1.Sgxe7?
      • threat
        • 2.Sd6#
      • 1...exf5
        • 2.Bd5#
      • 1...Sc8
        • 2.Rxc8#
      • 1...d3
        • 2.Qg4#
      • 1...Bxe5!
    • 1.Rxe7?
      • threat
        • 2.Sd6#
      • 1...Bxe5
        • 2.Sxe5#
      • 1...exf5
        • 2.Ke8#
      • 1...Sc8
        • 2.Rc7#
      • 1...d3!
    • 1.Rc8+?
      • 1...Sc6
        • 2.Rxc6#
      • 1...Sxc8!
    • 1.Rd8?
      • threat
        • 2.Rxd4#
      • 1...Bxe5
        • 2.Sxe5#
      • 1...exf5
        • 2.Kxe7#
        • 2.Bd5#
      • 1...d3
        • 2.Rd4#
      • 1...Sc6!
  • Keys
    • 1.Bxe7!
      • threat
        • 2.Sd6#
      • 1...Bxe5
        • 2.Sxe5#
      • 1...exf5
        • 2.Kf8#
      • 1...Sc8
        • 2.Rxc8#
      • 1...d3
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(i);XP(F)::S(H),XB(i)
    • S(f);N_GUARD::R(J),XS(f)
    • P(e);XS(G)::QAB(L)+K(I),XP(g)
  • Tries
    • Try
      • K(I);S_FLIGHT,XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • B(i);::B(A)
        • S(f);::B(A)
      • Refutation
        • S(a);
    • Try
      • S(H);XP(g)
      • Threat
        • S(G)
      • Vars
        • P(e);N_GUARD,XS(G)::B(A)
        • S(f);N_GUARD::R(J),XS(f)
        • P(c);OGATEB::QAR(L)
      • Refutation
        • B(i);XP(F)
    • Try
      • R(J);XP(g)
      • Threat
        • S(G)
      • Vars
        • B(i);XP(F)::S(H),XB(i)
        • P(e);XS(G)::QAB(L)+K(I)
        • S(f);N_GUARD::R(J)
      • Refutation
        • P(c);
    • Try
      • R(J);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::R(J),XS(f)
      • Refutation
        • S(f);XR(J)
    • Try
      • R(J);
      • Threat
        • R1(J),XP(c)
      • Vars
        • B(i);XP(F)::S(H),XB(i)
        • P(c);::R1(J)
      • Refutation
        • S(f);
  • Actual
    • B(K);XP(g)
    • Threat
      • S(G)
    • Vars
      • B(i);XP(F)::S(H),XB(i)
      • P(e);XS(G)::QAB(L)+K(I)
      • S(f);N_GUARD::R(J),XS(f)
      • P(c);N_GUARD::R1(D)
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