MESON Chess Problem Database

Problem Display
PID: 142328 (2K3B1/8/8/4kp1N/8/3PN3/4Qq2/4R1B1 w - - 0 1)

Bowater, Percy

Morning Post, 1934

2K3B1/8/8/4kp1N/8/3PN3/4Qq2/4R1B1

#2

8 + 3

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe1
      • 2.Sc4#
    • 1...Qg3
      • 2.Sc4#
    • 1...Qh4
      • 2.Sc4#
    • 1...Qf1
      • 2.Sc4#
    • 1...Qxe2
      • 2.Sc4#
    • 1...Qg2
      • 2.Sc4#
    • 1...Qh2
      • 2.Sc4#
    • 1...Qf3
      • 2.Sc4#
    • 1...Qf4
      • 2.Sc4#
  • Tries
    • 1.Qb2+?
      • 1...Qxb2
        • 2.Sc4#
      • 1...Kd6!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qc5#
      • 1...Qxc2+
        • 2.Sc4#
      • 1...Kd4
        • 2.Sxf5#
      • 1...Kd6
        • 2.Qc7#
      • 1...Qg2
        • 2.Sc4#
      • 1...Qf3
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(a);XR(A)::QAR(C)+S(E),DCHECK
    • Q(a);::QAR(C)+S(E),DCHECK
    • Q(a);XQ(C)::S(E)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • Q(a);XQ(C)::R(A)+S(E),DCHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • Q(a);CHECK,XQ(C)::R(A)+S(E),DCHECK
      • K(b);S_FLIGHT::S(E),XP(c)
      • K(b);S_FLIGHT::QAB1(C)
      • Q(a);::R(A)+S(E),DCHECK
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