MESON Chess Problem Database

Problem Display
PID: 137035 (8/3np3/4P1PB/1Kp1P2R/1pPNkNB1/p4ppP/2PP4/Q4n1b w - - 0 1)

Reeves, Alfred Christopher

Shire, David J

Sp. Prize, The Problemist, 2010

8/3np3/4P1PB/1Kp1P2R/1pPNkNB1/p4ppP/2PP4/Q4n1b

#2

14 + 10

56 The Problemist 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.d3#
    • 1...Sxe5
      • 2.Bf5#
    • 1...g2
      • 2.Bxf3#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Bf5#
      • 1...Sxd2
        • 2.Qe1#
      • 1...Se3
        • 2.d3#
      • 1...f2!
    • 1.Sf5?
      • threat
        • 2.d3#
      • 1...Sxd2
        • 2.Qe1#
      • 1...Sxe5!
    • 1.Sc6?
      • threat
        • 2.Bf5#
      • 1...Sxd2
        • 2.Qe1#
      • 1...Se3
        • 2.d3#
      • 1...f2!
    • 1.Sg2?
      • threat
        • 2.Bxf3#
        • 2.d3#
      • 1...Bxg2
        • 2.d3#
      • 1...Sxe5
        • 2.Bf5#
      • 1...fxg2
        • 2.Bf3#
        • 2.d3#
      • 1...cxd4
        • 2.d3#
      • 1...f2
        • 2.Bf3#
        • 2.d3#
      • 1...Sh2
        • 2.d3#
      • 1...Sxd2!
    • 1.Sd5?
      • threat
        • 2.d3#
      • 1...Sxe5
        • 2.Bf5#
      • 1...Sxd2!
    • 1.Qc3?
      • threat
        • 2.Qd3#
      • 1...Sxe5
        • 2.Bf5#
      • 1...bxc3!
    • 1.Qe1+?
      • 1...Se3
        • 2.Qxe3#
      • 1...Kxd4!
    • 1.Qxf1?
      • threat
        • 2.Qd3#
      • 1...Kxd4
        • 2.Qd3#
      • 1...Sxe5!
  • Keys
    • 1.Sfe2!
      • threat
        • 2.d3#
      • 1...Sxd2
        • 2.Sxg3#
      • 1...Sxe5
        • 2.Bf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(a);SBLOCK::P(C)
    • S(i);SBLOCK,XP(J)::B(H)
    • P(e);S_CUTB(b)::B(H),XP(d)
  • Tries
    • Try
      • S(F);
      • Threat
        • B(H)
      • Vars
        • S(a);N_GUARD,XP(C)::QAR(A)
        • S(a);SBLOCK::P(C)
      • Refutation
        • P(d);
    • Try
      • S(F);
      • Threat
        • P(C)
      • Vars
        • S(a);N_GUARD,XP(C)::QAR(A)
      • Refutation
        • S(i);XP(J)
    • Try
      • S(F);
      • Threat
        • B(H)
      • Vars
        • S(a);N_GUARD,XP(C)::QAR(A)
        • S(a);SBLOCK::P(C)
      • Refutation
        • P(d);
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);XS(G)::P(C)
        • S(i);SBLOCK,XP(J)::B(H)
        • P(h);XS(F)::P(C)
        • S(a);::P(C)
      • Refutation
        • S(a);XP(C)
    • Try
      • S(G);
      • Threat
        • P(C)
      • Vars
        • S(i);SBLOCK,XP(J)::B(H)
      • Refutation
        • S(a);XP(C)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(i);SBLOCK,XP(J)::B(H)
      • Refutation
        • P(f);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR1(A),XS(a)
      • Refutation
        • K(g);P-FLIGHT,XS(F)
    • Try
      • Q(A);XS(a)
      • Threat
        • QAB1(A)
      • Vars
        • K(g);P-FLIGHT,XS(F)::QAR1(A)
      • Refutation
        • S(i);XP(J)
  • Actual
    • S(G);
    • Threat
      • P(C)
    • Vars
      • S(a);N_GUARD,XP(C)::S(G),XP(e)
      • S(i);SBLOCK,XP(J)::B(H)
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