MESON Chess Problem Database

Problem Display
PID: 167138 (Q7/p1b1p1n1/KpBkbp1N/1Pp1p1n1/8/8/5R2/4B3 w - - 0 1)

Caplin, Aleksandr Borisovich

Sachmatija, 2011

Q7/p1b1p1n1/KpBkbp1N/1Pp1p1n1/8/8/5R2/4B3

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bb8
      • 2.Qxb8#
    • 1...c4
      • 2.Bb4#
  • Tries
    • 1.Qd8+?
      • 1...Bd7
        • 2.Qxd7#
      • 1...Bxd8!
  • Keys
    • 1.Rxf6!
      • 1...exf6
        • 2.Qf8#
      • 1...Bb8
        • 2.Qxb8#
      • 1...Bd8
        • 2.Qxd8#
      • 1...c4
        • 2.Bb4#
      • 1...e4
        • 2.Bg3#
      • 1...Sf3
        • 2.Sf7#
      • 1...Sh3
        • 2.Sf7#
      • 1...Se4
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...Sh7
        • 2.Sf7#
      • 1...Sf5
        • 2.Sxf5#
      • 1...Sh5
        • 2.Sf5#
      • 1...Se8
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • B(i);OGATEB::QAB(G),XB(i)
    • P(a);OGATEB::B(A)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR1(G),XB(f)
      • Refutation
        • B(i);XQ(G)
  • Actual
    • R(B);P_PINB(f),XP(g)
    • Vars
      • P(j);N_SPINB(f),OGATEB,XR(B)::QAB(G)
      • B(i);OGATEB::QAB(G),XB(i)
      • B(i);N_GUARD::QAR2(G),XB(i)
      • P(a);OGATEB::B(A)
      • P(b);OGATEB::B(A)
      • S(c);N_GUARD::S(F)
      • S(c);N_GUARD::S(F),XS(c)
      • S(k);N_GUARD::S(F),XS(k)
      • S(k);N_GUARD::S(F)
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