MESON Chess Problem Database

Problem Display
PID: 145064 (4Q3/3qP3/2kB4/Pbp2p2/2p1Np2/p1P2B2/p7/Kn5n w - - 0 1)

Challenger, Alfred Clement

Source?, 1896

4Q3/3qP3/2kB4/Pbp2p2/2p1Np2/p1P2B2/p7/Kn5n

#2

8 + 11

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Qxd7+?
      • 1...Kd5
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sg3#
        • 2.Sxc5#
        • 2.Sg5#
        • 2.Sf6#
      • 1...Kxd7!
  • Keys
    • 1.Bb8!
      • threat
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sg3#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sf6#
      • 1...Kd5
        • 2.Sg5#
      • 1...Kb7
        • 2.Sxc5#
      • 1...Qxe8
        • 2.Sf6#
      • 1...Sxc3
        • 2.Sxc3#
      • 1...fxe4
        • 2.Bxe4#
      • 1...Ba4
        • 2.Sd6#
      • 1...Ba6
        • 2.Sd6#
      • 1...Sd2
        • 2.Sxd2#
      • 1...Sf2
        • 2.Sxf2#
      • 1...Sg3
        • 2.Sxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(H);CHECK,XQ(k)
      • Refutation
        • K(j);S_FLIGHT,XQ(H)
  • Actual
    • B(F);
    • Threat
      • DUALS(6)
    • Vars
      • K(j);N_SPINQ(k),S_FLIGHT::B(C)+S(D)
      • K(j);N_SPINQ(k),S_FLIGHT::B(C)+S(D),DCHECK,XP(h)
      • Q(k);N_SPINQ(k),XQ(H)::B(C)+S(D)
      • S(a);XP(B)::B(C)+S(D),XS(a)
      • P(i);OGATE,P_SPINP(i),XS(D)::B(C),XP(i)
      • B(g);::B(C)+S(D)
      • S(a);::B(C)+S(D),XS(a)
      • S(b);::B(C)+S(D),XS(b)
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