MESON Chess Problem Database

Problem Display
PID: 140482 (5B2/6q1/4Q1rk/4N1r1/5PPb/7N/2B5/2K5 w - - 0 1)

Sadier, Eduardo

Source?, 2002

5B2/6q1/4Q1rk/4N1r1/5PPb/7N/2B5/2K5

#2

8 + 5

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Qxg6#
    • 1...Rf5
      • 2.Qxg6#
    • 1...Rh5
      • 2.Qxg6#
    • 1...Rxe6
      • 2.Sf7#
    • 1...Rf6
      • 2.Sf7#
  • Tries
    • 1.Qg8?
      • threat
        • 2.Sf7#
        • 2.Qh8#
      • 1...Rxg4
        • 2.Qh8#
      • 1...Rxe5
        • 2.Qh8#
      • 1...Rf5
        • 2.Qh8#
      • 1...Rf6
        • 2.Qh7#
        • 2.Qh8#
      • 1...Qxf8!
  • Keys
    • 1.Sxg5!
      • threat
        • 2.Sef7#
        • 2.Qxg6#
      • 1...Qxf8
        • 2.Qxg6#
      • 1...Rxe6
        • 2.Sef7#
        • 2.Sgf7#
      • 1...Bxg5
        • 2.Qxg6#
      • 1...Rf6
        • 2.Sef7#
        • 2.Sgf7#
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD,XS(F)::QAR1(G),XR(c)
    • R(b);N_GUARD::QAR1(G),XR(c)
    • R(c);N_SPINR(c),XQ(G)::S(F)
    • R(c);::S(F)
  • Tries
    • Try
      • Q(G);N_PINR(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XP(E)::QAR2(G)
        • R(b);XS(F)::QAR2(G)
        • R(b);::QAR2(G)
      • Refutation
        • Q(e);N_SPINQ(e),XB(H)
  • Actual
    • S(C);XR(b)
    • Threat
      • DUALS(2)
    • Vars
      • Q(e);N_SPINQ(e),XB(H)::QAR1(G),XR(c)
      • B(a);P_PINP(D),XS(C)::QAR1(G),XR(c)
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