MESON Chess Problem Database

Problem Display
PID: 31244 (1B4b1/6pP/R2Nn3/1Pbk1p2/NP4p1/2P2n2/2rPQ3/3R1B1K w - - 0 1)

Rice, John Michael

12th Place, 06. WCCT, 1998-2000

1B4b1/6pP/R2Nn3/1Pbk1p2/NP4p1/2P2n2/2rPQ3/3R1B1K

#2

13 + 9

3447 06. WCCT Award 2001
5174 Chess Problem Spectrum 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Bb6
      • 2.Sxb6#
    • 1...Bxd6
      • 2.Sb6#
      • 2.Rxd6#
    • 1...Sxd2
      • 2.Bg2#
    • 1...f4
      • 2.Qe4#
  • Tries
    • 1.Se8?
      • threat
        • 2.Qc4#
      • 1...Sed4
        • 2.Sc7#
      • 1...Bd4
        • 2.Rd6#
      • 1...Bd6
        • 2.Sb6#
        • 2.Rxd6#
      • 1...Sfd4
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Rxc3!
    • 1.Qxf3+?
      • 1...Ke5
        • 2.Qxf5#
      • 1...gxf3!
    • 1.c4+?
      • 1...Kd4
        • 2.Sxf5#
        • 2.Qe3#
      • 1...Rxc4!
  • Keys
    • 1.d4!
      • threat
        • 2.Qc4#
      • 1...Rxe2
        • 2.c4#
      • 1...Rxc3
        • 2.Sxc3#
      • 1...Bxd4
        • 2.Sb6#
      • 1...Bxd6
        • 2.Sb6#
        • 2.Rxd6#
      • 1...Sfxd4
        • 2.Bg2#
      • 1...Sexd4
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Sd2
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • B(d);N_GUARD::S(G),XB(d)
    • S(b);OGATEB,P_SPINS(b),XP(D)::B(B)
    • P(f);N_GUARD::QAB1(E)
  • Tries
    • Try
      • S(K);
      • Threat
        • QAB1(E)
      • Vars
        • S(g);N_GUARD::S(K)
        • B(d);N_GUARD::R1(J)
        • S(b);N_GUARD::QAR1(E)
        • S(b);N_GUARD::QAR1(E),XS(b)
        • S(g);N_GUARD::S(K),XS(g)
      • Refutation
        • R(a);XP(F)
    • Try
      • Q(E);CHECK,XS(b)
      • Vars
        • K(e);P-FLIGHT::QAR1(E),XP(f)
      • Refutation
        • P(c);XQ(E)
    • Try
      • P(F);CHECK
      • Refutation
        • R(a);XP(F)
  • Actual
    • P(D);
    • Threat
      • QAB1(E)
    • Vars
      • R(a);N_GUARD,XQ(E)::P(F)
      • R(a);XP(F)::S(G),XR(a)
      • B(d);N_GUARD,P_SPINB(d),XP(D)::S(G)
      • S(b);OGATEB,P_SPINS(b),XP(D)::B(B)
      • S(g);P_SPINS(g),XP(D)::PXB(i)=Q
      • S(b);N_GUARD::QAR1(E)
      • S(b);N_GUARD::QAR1(E),XS(b)
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