MESON Chess Problem Database

Problem Display
PID: 189682 (B2B4/7K/8/7k/R5qr/8/8/8 w - - 0 1)

Friedlander, Louis

Chess Poetry, 1912

B2B4/7K/8/7k/R5qr/8/8/8

#2

4 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Rxh4#
    • 1...Qe2
      • 2.Rxh4#
    • 1...Qf3
      • 2.Rxh4#
    • 1...Qe6
      • 2.Rxh4#
    • 1...Qc8
      • 2.Rxh4#
    • 1...Qg1
      • 2.Rxh4#
    • 1...Qg2
      • 2.Rxh4#
  • Tries
    • 1.Ra5+?
      • 1...Qg5
        • 2.Rxg5#
      • 1...Qf5+!
  • Keys
    • 1.Bf3!
      • threat
        • 2.Ra5#
      • 1...Qxf3
        • 2.Rxh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • Q(a);OGATE::R1(A),XR(b)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • Q(a);N_GUARD,P_SPINQ(a)::R1(A),XQ(a)
      • Refutation
        • Q(a);CHECK,P_SPINQ(a)
  • Actual
    • B(C);P_PINQ(a)
    • Threat
      • R(A)
    • Vars
      • Q(a);N_SPINQ(a),OGATE,XB(C)::R1(A),XR(b)
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