MESON Chess Problem Database

Problem Display
PID: 228854 (5rk1/5NPr/7p/7N/4R3/8/5Q2/7K w - - 0 1)

Andersson, Harry

Schackvarlden, 1926

5rk1/5NPr/7p/7N/4R3/8/5Q2/7K

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rh8
      • 2.gxh8Q#
      • 2.gxh8R#
    • 1...Re8
      • 2.Rxe8#
  • Keys
    • 1.Qa2!
      • threat
        • 2.Sxh6#
      • 1...Rxg7
        • 2.Sf6#
      • 1...Rxf7
        • 2.Re8#
      • 1...Rh8
        • 2.gxh8Q#
        • 2.gxh8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE::PXR(b)=Q
    • R(c);OGATEB::R(C),XR(c)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)+S(E),DCHECK,XP(a)
    • Vars
      • R(b);SBLOCK,XP(F)::S(D)
      • R(c);OGATEB,P_SPINR(c),XS(E)::R(C)
      • R(b);OGATE::PXR(b)=Q
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