MESON Chess Problem Database

Problem Display
PID: 16280 (R7/1Q2p3/1Bp5/2q1p3/1kP1R3/1p2P3/3K4/5B2 w - - 0 1)

Rice, John Michael

The Problemist, 2000

R7/1Q2p3/1Bp5/2q1p3/1kP1R3/1p2P3/3K4/5B2

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe3+
      • 2.Bxe3#
    • 1...Qd4+
      • 2.Bxd4#
    • 1...Qxb6
      • 2.Qxb6#
    • 1...Qd6+
      • 2.Bd4#
    • 1...Qb5
      • 2.cxb5#
    • 1...Qd5+
      • 2.cxd5#
  • Tries
    • 1.Bc7+?
      • 1...Qb6
        • 2.Qxb6#
      • 1...Qb5!
    • 1.Bd8+?
      • 1...Qb6
        • 2.Qxb6#
      • 1...Qb5!
    • 1.Ra2?
      • threat
        • 2.Ba5#
      • 1...Qxe3+
        • 2.Bxe3#
      • 1...Qd4+
        • 2.Bxd4#
      • 1...Qd6+
        • 2.Bd4#
      • 1...Qd5+
        • 2.cxd5#
      • 1...Qxb6
        • 2.Qxb6#
      • 1...Qxc4
        • 2.Ba7#
      • 1...Qb5
        • 2.cxb5#
      • 1...Qa5
        • 2.c5#
      • 1...bxa2!
  • Keys
    • 1.Ra1!
      • threat
        • 2.Ba5#
      • 1...Qxe3+
        • 2.Bxe3#
      • 1...Qd4+
        • 2.Bxd4#
      • 1...Qd6+
        • 2.Bd4#
      • 1...Qd5+
        • 2.cxd5#
      • 1...Qxb6
        • 2.Qxb6#
      • 1...Qxc4
        • 2.Ba7#
      • 1...Qb5
        • 2.cxb5#
      • 1...Qa5
        • 2.c5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(c);CHECK,OGATE,XP(C)::QAR(G)+B(F),XQ(c)
    • Q(c);CHECK,OGATE::QAR(G)+B(F),XQ(c)
    • Q(c);OGATE,P_SPINQ(c),XB(F)::QAR2(G),XQ(c)
    • Q(c);CHECK,OGATE::QAR(G)+B(F)
    • Q(c);OGATE::R(E)+P(D),XQ(c)
    • Q(c);CHECK,OGATE::R(E)+P(D),XQ(c)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAR2(G),XQ(c)
      • Refutation
        • Q(c);P_SPINQ(c)
    • Try
      • B(F);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAR2(G),XQ(c)
      • Refutation
        • Q(c);P_SPINQ(c)
    • Try
      • R(H);
      • Threat
        • QAR(G)+B(F),DCHECK
      • Vars
        • Q(c);CHECK,OGATE,XP(C)::QAR(G)+B(F),XQ(c)
        • Q(c);CHECK,OGATE::QAR(G)+B(F),XQ(c)
        • Q(c);CHECK,OGATE::QAR(G)+B(F)
        • Q(c);CHECK,OGATE::R(E)+P(D),XQ(c)
        • Q(c);OGATE,P_SPINQ(c),XB(F)::QAR2(G),XQ(c)
        • Q(c);N_GUARD,P_SPINQ(c),XP(D)::QAR(G)+B(F)
        • Q(c);OGATE::R(E)+P(D),XQ(c)
        • Q(c);OGATE::R(E)+P(D)
      • Refutation
        • P(a);XR(H)
  • Actual
    • R(H);
    • Threat
      • QAR(G)+B(F),DCHECK
    • Vars
      • Q(c);CHECK,OGATE,XP(C)::QAR(G)+B(F),XQ(c)
      • Q(c);CHECK,OGATE::QAR(G)+B(F),XQ(c)
      • Q(c);CHECK,OGATE::QAR(G)+B(F)
      • Q(c);CHECK,OGATE::R(E)+P(D),XQ(c)
      • Q(c);OGATE,P_SPINQ(c),XB(F)::QAR2(G),XQ(c)
      • Q(c);N_GUARD,P_SPINQ(c),XP(D)::QAR(G)+B(F)
      • Q(c);OGATE::R(E)+P(D),XQ(c)
      • Q(c);OGATE::R(E)+P(D)
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