MESON Chess Problem Database

Problem Display
PID: 239050 (4rb2/4q3/1P6/2P5/RB1kP1N1/N3R3/1K1pP3/6Q1 w - - 0 1)

Rice, John Michael

idee & form, 2002

4rb2/4q3/1P6/2P5/RB1kP1N1/N3R3/1K1pP3/6Q1

#2

11 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5
      • 2.Bc3#
    • 1...Qxe4
      • 2.Rd3#
    • 1...d1Q
      • 2.Qxd1#
    • 1...d1S+
      • 2.Qxd1#
    • 1...d1B
      • 2.Qxd1#
    • 1...d1R
      • 2.Qxd1#
  • Tries
    • 1.Ra5?
      • threat
        • 2.Bc3#
      • 1...d1S+
        • 2.Qxd1#
      • 1...Qxe4
        • 2.Rd3#
      • 1...Qxc5!
    • 1.Qa1?
      • threat
        • 2.Kb1#
        • 2.Ka2#
        • 2.Kc2#
        • 2.Kb3#
      • 1...d1S+
        • 2.Qxd1#
      • 1...Qxc5
        • 2.Bc3#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1B
        • 2.Kb1#
        • 2.Kc1#
        • 2.Ka2#
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...Qe6
        • 2.Kb1#
        • 2.Kc2#
      • 1...Qf7
        • 2.Kb1#
        • 2.Kc2#
      • 1...Qxe4!
    • 1.Qb1?
      • threat
        • 2.Qd3#
      • 1...d1S+
        • 2.Qxd1#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...Qxe4!
    • 1.Qh1?
      • threat
        • 2.Rd3#
      • 1...d1S+
        • 2.Qxd1#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...Qxe4!
  • Keys
    • 1.Kc2!
      • threat
        • 2.Qa1#
      • 1...Qxc5+
        • 2.Bc3#
      • 1...Qxe4+
        • 2.Rd3#
      • 1...d1Q+
        • 2.Qxd1#
      • 1...d1B+
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(c);SBLOCK,XP(J)::R(F)+B(G),DCHECK
    • Q(c);SBLOCK,XP(H)::QAB(A)+R(E),DCHECK
    • P(a);OGATEB::QAR(A),XQ(a)
    • P(a);CHECK,OGATEB::QAR(A),XS(a)
    • P(a);OGATEB::QAR(A),XB(a)
    • P(a);OGATEB::QAR(A),XR(a)
  • Tries
    • Try
      • R(F);
      • Threat
        • B(G)
      • Vars
        • P(a);CHECK,OGATEB::QAR(A),XS(a)
        • Q(c);SBLOCK,XP(H)::QAB(A)+R(E),DCHECK
      • Refutation
        • Q(c);XP(J)
    • Try
      • Q(A);
      • Threat
        • DUALS(4)
      • Vars
        • P(a);CHECK,OGATEB::QAR(A),XS(a)
        • Q(c);SBLOCK,XP(J)::R(F)+B(G),DCHECK
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • Q(c);XP(H)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(a);CHECK,OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • Q(c);XP(H)
    • Try
      • Q(A);
      • Threat
        • R1(E)
      • Vars
        • P(a);CHECK,OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • Q(c);XP(H)
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • QAB(A)
    • Vars
      • Q(c);CHECK,SBLOCK,XP(J)::R(F)+B(G),DCHECK
      • Q(c);CHECK,SBLOCK,XP(H)::QAB(A)+R(E),DCHECK
      • P(a);CHECK,OGATEB::QAR(A),XQ(a)
      • P(a);CHECK,OGATEB::QAR(A),XB(a)
      • P(a);OGATEB::QAR(A),XS(a)
      • P(a);OGATEB::QAR(A),XR(a)
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