MESON Chess Problem Database

Problem Display
PID: 196990 (1B2N3/p2p1p2/2pP1P2/K2k2P1/N3nR1Q/2p5/P2P2R1/7B w - - 0 1)

Fegan, Bertram George

Australasian Chess Magazine, 1919

1B2N3/p2p1p2/2pP1P2/K2k2P1/N3nR1Q/2p5/P2P2R1/7B

#2

13 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Rf5+?
      • 1...Kc4
        • 2.Qxe4#
      • 1...Ke6
        • 2.Sg7#
        • 2.Qxe4#
      • 1...Kd4!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qxe4#
      • 1...Kc4
        • 2.Qxe4#
      • 1...Kd4
        • 2.Qxe4#
      • 1...Ke5
        • 2.Qxe4#
      • 1...Ke6
        • 2.Qxe4#
      • 1...Sxd2
        • 2.Rxd2#
      • 1...Sxg5
        • 2.Rxg5#
      • 1...Sxd6
        • 2.Sc7#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...Sf2
        • 2.Rgxf2#
      • 1...Sg3
        • 2.Rxg3#
      • 1...Sc5
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(c);P_SPINS(b),S_FLIGHT::QAR2(G),XS(b)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(b)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G),XS(b)
    • Vars
      • K(c);P_SPINS(b),S_FLIGHT::QAR2(G),XS(b)
      • K(c);P-FLIGHT,P_SPINS(b)::QAR1(G),XS(b)
      • S(b);OGATE,XP(C)::B(A)+R(D),DCHECK,XS(b)
      • S(b);OGATE,XP(I)::B(A)+R(D),DCHECK,XS(b)
      • S(b);SBLOCK,XP(J)::S(M)
      • S(b);XP(K)::S(M),XS(b)
      • S(b);OGATEB::B(A)+R(D),XS(b)
      • S(b);N_GUARD,SBLOCK::S(E),XP(a)
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