MESON Chess Problem Database

Problem Display
PID: 196750 (Kn1k4/2Rpr3/pPP1QB2/5q1B/3Nr3/b2R4/bp6/1n6 w - - 0 1)

Fegan, Bertram George

Australian Columns, 1919

Kn1k4/2Rpr3/pPP1QB2/5q1B/3Nr3/b2R4/bp6/1n6

#2

9 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc6
      • 2.Sxc6#
    • 1...dxc6
      • 2.Sxc6#
      • 2.Rc8#
    • 1...dxe6
      • 2.Sxe6#
    • 1...d5
      • 2.Rc8#
      • 2.Qg8#
    • 1...d6
      • 2.Bxe7#
      • 2.Rc8#
  • Tries
    • 1.Kxb8?
      • threat
        • 2.Rxd7#
        • 2.Rc8#
      • 1...Qxe6
        • 2.Rc8#
      • 1...Qxh5
        • 2.Rc8#
        • 2.Qxd7#
      • 1...Qxf6
        • 2.Rc8#
      • 1...Rxd4
        • 2.Rc8#
      • 1...Bxe6
        • 2.Rc8#
      • 1...dxc6
        • 2.Sxc6#
        • 2.Rd7#
        • 2.Rc8#
      • 1...dxe6
        • 2.Sxe6#
        • 2.Rd7#
        • 2.Rc8#
      • 1...Qg6
        • 2.Rc8#
        • 2.Qxd7#
      • 1...Qf4
        • 2.Qxd7#
      • 1...Qd5
        • 2.Rc8#
      • 1...Qe5
        • 2.Qxd7#
      • 1...d5
        • 2.Rd7#
        • 2.Rc8#
        • 2.Qg8#
      • 1...d6
        • 2.Bxe7#
        • 2.Rd7#
        • 2.Rc8#
      • 1...Bd6!
    • 1.Rxd7+?
      • 1...Kc8
        • 2.b7#
      • 1...Sxd7!
  • Keys
    • 1.Kb7!
      • threat
        • 2.Rc8#
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Sxe6#
      • 1...d5
        • 2.Qg8#
      • 1...d6
        • 2.Bxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(j);XP(E)::S(B),XS(j)
    • P(h);XQ(F)::R(A)+S(B),DCHECK,XP(h)
  • Tries
    • Try
      • K(I);P-FLIGHT,XS(j)
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);XQ(F)::R1(H)
        • Q(f);N_SPINR(i),XB(G)::R1(H)
        • R(e);XS(B)::R1(H)
        • B(b);XQ(F)::R1(H)
        • Q(f);N_GUARD,P_PINR(H)::QAR1(F),XP(h)
        • Q(f);::R1(H)
      • Refutation
        • B(d);P_PINR(H)
    • Try
      • R(H);CHECK,XP(h)
      • Vars
        • K(k);N_SPINR(i),P-FLIGHT::P(D)
      • Refutation
        • S(j);XR(H)
  • Actual
    • K(I);S_FLIGHT
    • Threat
      • R1(H)
    • Vars
      • P(h);P_PINR(H),XP(E)::R(A)+S(B),DCHECK,XP(h)
      • P(h);P_PINR(H),XQ(F)::R(A)+S(B),DCHECK,XP(h)
      • P(h);P_PINR(H),S_CUTB(b)::QAR(F)
      • P(h);P_PINR(H),S_CUTB(d)::B(G),XR(i)
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