MESON Chess Problem Database

Problem Display
PID: 61146 (1b1R4/p4r2/3pkPpN/7b/2P1K1p1/1pQ2R1B/1r1P4/B1n5 w - - 0 1)

Rice, John Michael

2nd Prize, Ling-50 Ty., 2005

1b1R4/p4r2/3pkPpN/7b/2P1K1p1/1pQ2R1B/1r1P4/B1n5

#2

10 + 11

136 Problem Observer 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf6
      • 2.Qxf6#
    • 1...d5+
      • 2.cxd5#
  • Tries
    • 1.Re3?
      • threat
        • 2.Kf4#
      • 1...d5+
        • 2.cxd5#
      • 1...Rxf6
        • 2.Kd4#
      • 1...Se2
        • 2.Kd3#
      • 1...Sd3
        • 2.Kxd3#
      • 1...g5!
    • 1.Re8+?
      • 1...Re7
        • 2.Rxe7#
      • 1...Kd7!
    • 1.Qd4?
      • threat
        • 2.Qd5#
      • 1...d5+
        • 2.Qxd5#
        • 2.cxd5#
      • 1...Rxf6
        • 2.Qxf6#
      • 1...Rxd2!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Kd4#
      • 1...d5+
        • 2.cxd5#
      • 1...Rxd2
        • 2.Kf4#
      • 1...Se2
        • 2.Kd3#
      • 1...Sd3
        • 2.Kxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(j);OGATE,XP(H)::QAR1(C),XR(j)
    • P(f);CHECK,OGATE::P(F),XP(f)
  • Tries
    • Try
      • R(D);
      • Threat
        • R(D)+K(G)
      • Vars
        • P(f);CHECK,OGATE::P(F),XP(f)
        • R(j);SBLOCK,XP(H)::R(D)+K(G)
        • S(a);::R(D)+K(G)
        • S(a);::R(D)+K(G),XS(a)
      • Refutation
        • P(h);
    • Try
      • R(J);CHECK
      • Vars
        • R(j);N_GUARD,P_SPINR(j)::R1(J),XR(j)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • R(j);OGATE,XP(H)::QAR1(C),XR(j)
      • Refutation
        • R(b);XP(B)
  • Actual
    • Q(C);
    • Threat
      • QAR(C)+K(G)
    • Vars
      • P(f);CHECK,OGATE::P(F),XP(f)
      • R(b);XP(B)::QAR(C)+K(G)
      • S(a);::QAR(C)+K(G)
      • S(a);::QAR(C)+K(G),XS(a)
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