MESON Chess Problem Database

Problem Display
PID: 243327 (8/6pK/2pQ4/q1rpN3/1np1k1P1/5n2/r1b4R/1N4BB w - - 0 1)

Andersson, Sven Tore

Sinfonie Scacchistiche, 1966

8/6pK/2pQ4/q1rpN3/1np1k1P1/5n2/r1b4R/1N4BB

#2

8 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Qxd4#
  • Tries
    • 1.Qf6?
      • threat
        • 2.Sd2#
        • 2.Sc3#
        • 2.Bxf3#
        • 2.Re2#
        • 2.Qf5#
      • 1...Bxb1
        • 2.Bxf3#
        • 2.Qf5#
      • 1...d4
        • 2.Bxf3#
      • 1...Qa3
        • 2.Sd2#
        • 2.Qf5#
      • 1...Ra3
        • 2.Sd2#
        • 2.Qf5#
      • 1...Bd1
        • 2.Sc3#
        • 2.Qf5#
      • 1...Bb3
        • 2.Sc3#
        • 2.Bxf3#
        • 2.Qf5#
      • 1...Bd3
        • 2.Sc3#
        • 2.Bxf3#
        • 2.Qf5#
      • 1...Ba4
        • 2.Sc3#
        • 2.Bxf3#
        • 2.Qf5#
      • 1...Sd3
        • 2.Bxf3#
        • 2.Re2#
        • 2.Qf5#
      • 1...Sa6
        • 2.Bxf3#
        • 2.Re2#
        • 2.Qf5#
      • 1...c3
        • 2.Bxf3#
        • 2.Re2#
        • 2.Qf5#
      • 1...g6
        • 2.Sd2#
        • 2.Sc3#
        • 2.Bxf3#
        • 2.Re2#
      • 1...gxf6!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qg6#
      • 1...Kxd3
        • 2.Qg6#
      • 1...Bxd3
        • 2.Sc3#
      • 1...Sxd3
        • 2.Re2#
      • 1...cxd3
        • 2.Sd2#
      • 1...d4
        • 2.Qxd4#
      • 1...g6
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(i);OGATE::QAR1(G),XP(i)
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(5)
      • Vars
        • P(i);::B(C),XS(c)
      • Refutation
        • P(k);XQ(G)
  • Actual
    • S(F);
    • Threat
      • QAB(G)
    • Vars
      • K(f);N_SPINS(c),P_SPINP(i),S_FLIGHT,XS(F)::QAB(G)
      • B(b);SBLOCK,XS(F)::S(A)
      • S(d);SBLOCK,XS(F)::R(D)
      • P(e);SBLOCK,XS(F)::S(A)
      • P(i);OGATE::QAR1(G),XP(i)
      • P(k);::QAB(G),XP(k)
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