MESON Chess Problem Database

Problem Display
PID: 226694 (2Bq4/2pp1r2/N3b2b/1Ppk4/6NQ/1pPP1P2/3n3B/7K w - - 0 1)

Marsland, GE

Sunday Chronicle, 1945

(First published on Sun Dec 16 1945)

2Bq4/2pp1r2/N3b2b/1Ppk4/6NQ/1pPP1P2/3n3B/7K

#2

10 + 10

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh4
      • 2.Sxc7#
    • 1...Qg5
      • 2.Sxc7#
    • 1...Qf6
      • 2.Sxc7#
    • 1...Qe7
      • 2.Sxc7#
    • 1...Qe8
      • 2.Sxc7#
    • 1...Qf8
      • 2.Sxc7#
    • 1...Qg8
      • 2.Sxc7#
    • 1...Qh8
      • 2.Sxc7#
    • 1...Re7
      • 2.Sf6#
    • 1...Be3
      • 2.Sxe3#
    • 1...Bg7
      • 2.Se3#
    • 1...Bf8
      • 2.Se3#
    • 1...Se4
      • 2.fxe4#
  • Tries
    • 1.Sf6+?
      • 1...Qxf6
        • 2.Sxc7#
      • 1...Rxf6!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxc5#
      • 1...Qxe7
        • 2.Sxc7#
      • 1...Rxe7
        • 2.Sf6#
      • 1...Bxg4
        • 2.Qe5#
      • 1...Qf8
        • 2.Sxc7#
      • 1...Bf5
        • 2.Qe5#
      • 1...Be3
        • 2.Sxe3#
      • 1...Bf8
        • 2.Se3#
      • 1...Se4
        • 2.fxe4#
      • 1...c4
        • 2.Sb4#
        • 2.Qc5#
      • 1...d6
        • 2.Bxe6#
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(j);N_GUARD,P_PINB(B),XQ(G)::S(I),XP(g)
    • Q(j);N_GUARD::S(I),XP(g)
    • R(i);N_GUARD,S_CUTQ(j)::S(F)
    • B(f);N_GUARD::S(F),XB(f)
    • B(f);N_GUARD::S(F)
    • S(a);OGATE::P(E),XS(a)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • Q(j);XS(F)::S(I),XP(g)
      • Refutation
        • R(i);XS(F)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G),XP(c)
    • Vars
      • Q(j);N_GUARD,XQ(G)::S(I),XP(g)
      • R(i);N_GUARD,XQ(G)::S(F)
      • B(e);OGATE,XS(F)::QAR1(G)
      • Q(j);N_GUARD::S(I),XP(g)
      • B(e);OGATE::QAR1(G)
      • B(f);N_GUARD::S(F),XB(f)
      • B(f);N_GUARD::S(F)
      • S(a);OGATE::P(E),XS(a)
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