MESON Chess Problem Database

Problem Display
PID: 76329 (Q4b2/8/2p5/n7/5B2/4N3/3P1P2/R3K1Nk w Q - 0 1)

Heyl, Peter

2nd Comm., Troll, 2005-2006

Q4b2/8/2p5/n7/5B2/4N3/3P1P2/R3K1Nk

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg1
      • 2.Ke2#
  • Tries
    • 1.Ke2?
      • threat
        • 2.Sf3#
        • 2.Sh3#
      • 1...Ba3
        • 2.Qh8#
      • 1...Sb3
        • 2.Qxc6#
      • 1...Bg7!
    • 1.Sf3?
      • threat
        • 2.Ke2#
        • 2.0-0-0#
      • 1...Ba3
        • 2.Qh8#
      • 1...Bg7
        • 2.0-0-0#
      • 1...Sb3!
    • 1.Sh3?
      • threat
        • 2.Ke2#
        • 2.0-0-0#
      • 1...Bg7
        • 2.0-0-0#
      • 1...Sb3
        • 2.Qxc6#
      • 1...Ba3!
    • 1.Qxc6+?
      • 1...Kxg1
        • 2.Ke2#
        • 2.Qg2#
      • 1...Sxc6!
  • Keys
    • 1.Se2!
      • threat
        • 2.0-0-0#
      • 1...Ba3
        • 2.Qh8#
      • 1...Sb3
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);N_SPINP(c),P-FLIGHT,XS(C)::R(A)+K(B)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(d);OGATE::QAB(H)
        • S(b);N_GUARD::QAB(H),XP(c)
      • Refutation
        • B(d);
    • Try
      • S(C);N_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);OGATE::QAB(H)
        • B(d);::0-0-0
      • Refutation
        • S(b);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(d);::0-0-0
        • S(b);N_GUARD::QAB(H),XP(c)
      • Refutation
        • B(d);
    • Try
      • Q(H);CHECK,XP(c)
      • Refutation
        • S(b);XQ(H)
  • Actual
    • S(C);
    • Threat
      • 0-0-0
    • Vars
      • B(d);OGATE::QAB(H)
      • S(b);N_GUARD::QAB(H),XP(c)
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