MESON Chess Problem Database

Problem Display
PID: 275267 (QB6/8/8/8/K7/R5pp/6rk/5RnB w - - 0 1)

Dobbs, Gilbert S

The Problemist, 1934

QB6/8/8/8/K7/R5pp/6rk/5RnB

#2

6 + 5

3713 Snap 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Bxg3#
    • 1...Rb2
      • 2.Bxg3#
    • 1...Rc2
      • 2.Bxg3#
    • 1...Rd2
      • 2.Bxg3#
    • 1...Re2
      • 2.Bxg3#
    • 1...Rf2
      • 2.Bxg3#
      • 2.Rxf2#
  • Keys
    • 1.Rxg3!
      • 1...Ra2+
        • 2.Ra3#
      • 1...Kxh1
        • 2.Rxh3#
      • 1...Rxg3
        • 2.Rf2#
      • 1...Se2
        • 2.Rxg2#
      • 1...Rb2
        • 2.Rb3#
      • 1...Rc2
        • 2.Rc3#
      • 1...Rd2
        • 2.Rd3#
      • 1...Re2
        • 2.Re3#
      • 1...Rf2
        • 2.Rxf2#
      • 1...Sf3
        • 2.Rxg2#

Anticipated by 53516(1934)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 5
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD,P_PINR(C)::B(F),XP(d)
    • R(b);N_GUARD::B(F),XP(d)
  • Actual
    • R(C);XP(d)
    • Vars
      • R(b);CHECK,N_GUARD::B(F)+R(C)
      • K(c);N_GUARD,P-FLIGHT,P_SPINR(b),P_SPINS(a),XB(B)::R(C),XP(e)
      • R(b);OGATEB,P_SPINR(b),XR(C)::R(A)
      • S(a);::B(F)+R(C),DCHECK,XR(b)
      • R(b);N_GUARD::B(F)+R(C)
      • R(b);OGATEB::R(A),XR(b)
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