MESON Chess Problem Database

Problem Display
PID: 89106 (8/8/8/8/5Q2/bP1k4/N7/R3K3 w Q - 0 1)

Rice, John Michael

The Problemist, 1991

8/8/8/8/5Q2/bP1k4/N7/R3K3

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc1+?
      • 1...Kc2
        • 2.Qd2#
      • 1...Kc3
        • 2.Qd2#
      • 1...Bxc1!
    • 1.Rc1?
      • threat
        • 2.Rc3#
      • 1...Bb4+
        • 2.Sxb4#
      • 1...Bb2
        • 2.Sb4#
      • 1...Bxc1!
    • 1.Qe3+?
      • 1...Kc2
        • 2.Qc3#
      • 1...Kxe3!
    • 1.Qf3+?
      • 1...Kc2
        • 2.Qc3#
      • 1...Kd4!
    • 1.Qd4+?
      • 1...Kc2
        • 2.Qc3#
      • 1...Kxd4!
  • Keys
    • 1.Qe5!
      • 1...Bb4+
        • 2.Sxb4#
      • 1...Kc2
        • 2.Qc3#
      • 1...Bc1
        • 2.Sb4#
      • 1...Bb2
        • 2.Sb4#
      • 1...Bc5
        • 2.0-0-0#
      • 1...Bd6
        • 2.0-0-0#
      • 1...Be7
        • 2.0-0-0#
      • 1...Bf8
        • 2.0-0-0#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(E)
        • K(b);P-FLIGHT::QAB1(E)
      • Refutation
        • B(a);XS(C)
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • B(a);CHECK,N_GUARD::S(C),XB(a)
        • B(a);N_GUARD::S(C)
      • Refutation
        • B(a);XR(A)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
  • Actual
    • Q(E);
    • Vars
      • B(a);CHECK,N_GUARD::S(C),XB(a)
      • K(b);S_FLIGHT::QAR1(E)
      • B(a);N_GUARD::S(C)
      • B(a);::0-0-0
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