MESON Chess Problem Database

Problem Display
PID: 233899 (K5Rr/8/B7/8/8/8/Q5RP/r5Bk w - - 0 1)

Hannemann, Knud Harald

Skakbladet, 1922

K5Rr/8/B7/8/8/8/Q5RP/r5Bk

#2

7 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg1
      • 2.Rxg1#
    • 1...Rxh2
      • 2.Rxh2#
  • Keys
    • 1.Bb7!
      • threat
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rf2#
        • 2.Rg3#
        • 2.Rg4#
        • 2.Rg5#
        • 2.Rg6#
        • 2.Rg7#
      • 1...Rxa2+
        • 2.Rxa2#
      • 1...Rxg8+
        • 2.Rxg8#
      • 1...Rxg1
        • 2.Rxg1#
      • 1...Rxh2
        • 2.Rxh2#
      • 1...Rb1
        • 2.Rb2#
      • 1...Rc1
        • 2.Rc2#
      • 1...Rd1
        • 2.Rd2#
      • 1...Re1
        • 2.Re2#
      • 1...Rf1
        • 2.Rf2#
      • 1...Rh3
        • 2.R2g3#
      • 1...Rh4
        • 2.R2g4#
      • 1...Rh5
        • 2.R2g5#
      • 1...Rh6
        • 2.R2g6#
      • 1...Rh7
        • 2.R2g7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE,XB(A)::R1(C),XR(a)
    • R(c);N_PINR(G),OGATE,XP(D)::R1(C),XR(c)
  • Actual
    • B(E);P_SPINQ(B)
    • Threat
      • DUALS(10)
    • Vars
      • R(a);CHECK,OGATE,XQ(B)::B(E)+R(C),XR(a)
      • R(c);CHECK,OGATE,XR(G)::B(E)+R(C),XR(c)
      • R(a);N_PINQ(B),OGATE,XB(A)::B(E)+R(C),DCHECK,XR(a)
      • R(c);N_PINR(G),OGATE,XP(D)::B(E)+R(C),DCHECK,XR(c)
      • R(a);N_PINQ(B)::B(E)+R(C)
      • R(c);N_PINR(G)::B(E)+R(C)
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