MESON Chess Problem Database

Problem Display
PID: 243980 (6bR/6Q1/6B1/2p3B1/3b4/K2R4/3r4/1k5r w - - 0 1)

Gvozdjak, Peter

Sachove umeni (Ceskoslovensky sach), 1994

6bR/6Q1/6B1/2p3B1/3b4/K2R4/3r4/1k5r

#2

6 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Rxd1#
    • 1...Rb2
      • 2.Rd1#
    • 1...Re2
      • 2.Rd1#
    • 1...Rf2
      • 2.Rd1#
    • 1...Rg2
      • 2.Rd1#
    • 1...Rh2
      • 2.Rd1#
  • Tries
    • 1.Rb3+?
      • 1...Kc1
        • 2.Rb1#
      • 1...Ka1!
    • 1.Rxd4+?
      • 1...Ka1
        • 2.Rxd2#
      • 1...Kc1
        • 2.Rxh1#
      • 1...Rc2
        • 2.Rxh1#
      • 1...Rd3+!
  • Keys
    • 1.Rxd2+!
      • 1...Ka1
        • 2.Rxh1#
      • 1...Kc1
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(c);OGATE::B(D)+R(B),DCHECK,XR(c)
    • R(c);OGATE::B(D)+R(B),DCHECK
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINR(c)::R1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINB(d)
    • Try
      • R(B);CHECK,XB(d)
      • Vars
        • K(a);P-FLIGHT::QAB(E)+R(B),XR(c)
        • K(a);P-FLIGHT,P_SPINR(c)::R(F),XR(b)
        • R(c);P_SPINR(c)::R(F),XR(b)
      • Refutation
        • R(c);CHECK,P_SPINR(c)
  • Actual
    • R(B);CHECK,XR(c)
    • Vars
      • K(a);P-FLIGHT,P_SPINB(d)::R(F),XR(b)
      • K(a);P-FLIGHT::B(C)+R(B),XB(d)
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