MESON Chess Problem Database

Problem Display
PID: 138674 (8/B7/p7/kn6/p4p2/N1P2K2/1n6/2Q5 w - - 0 1)

Galitzky, Aleksandr Vasilevich

Shakhmatny vechera, 1901

8/B7/p7/kn6/p4p2/N1P2K2/1n6/2Q5

#2

5 + 6

14666 Aleksandr Galitzky - Shakhmaty Geine (Vol 1) 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Sc4#
    • 1...Sd3
      • 2.Sc4#
    • 1...Sc4
      • 2.Sxc4#
    • 1...Sxc3
      • 2.Qxc3#
  • Tries
    • 1.Qxb2?
      • threat
        • 2.Sc4#
        • 2.Qb4#
      • 1...Sxa3
        • 2.Bb6#
        • 2.Qb4#
        • 2.Qb6#
      • 1...Sxc3
        • 2.Sc4#
        • 2.Bb6#
        • 2.Qxc3#
        • 2.Qb6#
      • 1...Sd6
        • 2.Bb6#
        • 2.Qb4#
        • 2.Qb6#
      • 1...Sd4+!
    • 1.Qe1?
      • 1...Sd4+
        • 2.cxd4#
      • 1...Sxa3
        • 2.c4#
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Sd1
        • 2.Sc4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sd6
        • 2.c4#
      • 1...Sc7
        • 2.c4#
      • 1...Sxa7!
  • Keys
    • 1.Qd2!
      • 1...Sd4+
        • 2.cxd4#
      • 1...Sxa3
        • 2.c4#
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Sxa7
        • 2.Qd8#
      • 1...Sd1
        • 2.Sc4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sd6
        • 2.c4#
      • 1...Sc7
        • 2.c4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::S(B)
    • S(a);N_GUARD::S(B),XS(a)
    • S(e);OGATE,XP(C)::QAB(A),XS(e)
  • Tries
    • Try
      • Q(A);XS(a)
      • Threat
        • DUALS(2)
      • Refutation
        • S(e);CHECK
    • Try
      • Q(A);
      • Vars
        • S(e);CHECK,OGATE::QAB(A)+P(C),XS(e)
        • S(e);N_GUARD,XS(B)::QAB(A)+P(C)
        • S(e);OGATE,P_SPINS(e),XP(C)::QAB(A),XS(e)
        • S(a);N_GUARD::S(B)
        • S(a);N_GUARD::S(B),XS(a)
        • S(e);N_GUARD::QAB(A)+P(C)
      • Refutation
        • S(e);XB(E)
  • Actual
    • Q(A);
    • Vars
      • S(e);CHECK,OGATE::QAB(A)+P(C),XS(e)
      • S(e);N_GUARD,XS(B)::QAB(A)+P(C)
      • S(e);OGATE,P_SPINS(e),XP(C)::QAB(A),XS(e)
      • S(e);N_GUARD,XB(E)::QAB(A)
      • S(a);N_GUARD::S(B)
      • S(a);N_GUARD::S(B),XS(a)
      • S(e);N_GUARD::QAB(A)+P(C)
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