MESON Chess Problem Database

Problem Display
PID: 170890 (r2r4/2k5/3R4/1P2K3/8/8/8/7Q w - - 0 1)

Nanning, Frederik Willem

Problemisten, 1947

r2r4/2k5/3R4/1P2K3/8/8/8/7Q

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rab8
      • 2.Qc6#
    • 1...Rdb8
      • 2.Qc6#
  • Keys
    • 1.b6+!
      • 1...Kb8
        • 2.Rxd8#
      • 1...Kc8
        • 2.Qxa8#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(b);SBLOCK::QAR1(A)
    • R(c);SBLOCK::QAR1(A)
  • Actual
    • P(B);CHECK
    • Vars
      • K(a);S_FLIGHT::R(D),XR(c)
      • K(a);P-FLIGHT::QAR2(A),XR(b)
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