MESON Chess Problem Database

Problem Display
PID: 18306 (B7/3K1p2/3p3Q/1nNpkp2/2p5/2r3p1/4nP2/B7 w - - 0 1)

Rice, John Michael

Time & Tide, 1954

B7/3K1p2/3p3Q/1nNpkp2/2p5/2r3p1/4nP2/B7

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qe3#
    • 1...Sed4
      • 2.f4#
    • 1...Sbd4
      • 2.Qxd6#
    • 1...f6
      • 2.Qe3#
  • Tries
    • 1.Sd3+?
      • 1...Kd4
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
      • 1...cxd3!
    • 1.Qxd6+?
      • 1...Kd4
        • 2.Qxd5#
      • 1...Sxd6!
  • Keys
    • 1.Ke7!
      • threat
        • 2.Qe3#
      • 1...Kd4
        • 2.Qe3#
      • 1...f4
        • 2.Qf6#
      • 1...Sed4
        • 2.f4#
      • 1...Sf4
        • 2.Qf6#
      • 1...Sbd4
        • 2.Qxd6#
      • 1...d4
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(g);S_FLIGHT::QAB1(D)
    • S(a);N_GUARD,N_SPINR(b),SBLOCK::P(B)
    • S(e);N_GUARD,N_SPINR(b),SBLOCK::QAB1(D),XP(i)
    • P(j);SBLOCK::QAR2(D)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(g);S_FLIGHT::QAB1(D)
        • K(g);N_SPINR(b),P-FLIGHT,P_SPINP(f)::QAR1(D)
      • Refutation
        • P(d);XS(C)
    • Try
      • Q(D);CHECK,XP(i)
      • Vars
        • K(g);P_SPINP(f),S_FLIGHT::QAR1(D),XP(f)
      • Refutation
        • S(e);XQ(D)
  • Actual
    • K(E);P-FLIGHT
    • Threat
      • QAR2(D)
    • Vars
      • K(g);S_FLIGHT::QAB1(D)
      • P(h);::QAB1(D)
      • S(a);N_GUARD,N_SPINR(b),SBLOCK::P(B)
      • S(a);SBLOCK::QAB1(D)
      • S(e);N_GUARD,N_SPINR(b),SBLOCK::QAB1(D),XP(i)
      • P(f);N_SPINR(b),SBLOCK::S(C)
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