MESON Chess Problem Database

Problem Display
PID: 56785 (1n6/1n2RP1p/4NP1p/1p2N2R/3pk3/2pp3K/Q4P2/8 w - - 0 1)

Hannelius, Jan Ingvar

3rd HM., BCF 107. Ty., 1964-1965

1n6/1n2RP1p/4NP1p/1p2N2R/3pk3/2pp3K/Q4P2/8

#2

9 + 9

3772 FIDE Album (1965-1967) 1976

SOLUTION

  • SOUND
  • Tries
    • 1.Sxd3?
      • threat
        • 2.Qe2#
      • 1...Kxd3
        • 2.Sf4#
      • 1...Kf3
        • 2.Sxd4#
      • 1...c2!
    • 1.Sg6?
      • threat
        • 2.Qd5#
      • 1...Kf3
        • 2.Sxd4#
      • 1...d2!
    • 1.Qc4?
      • threat
        • 2.Qxd4#
      • 1...Sc6
        • 2.Qxc6#
      • 1...bxc4!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Rh4#
      • 1...Kxd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);XP(b)
      • Threat
        • QAR2(A)
      • Vars
        • K(d);S_FLIGHT,XS(D)::S(F)
        • K(d);S_FLIGHT::S(F),XP(c)
      • Refutation
        • P(a);
    • Try
      • S(D);
      • Threat
        • QAB1(A)
      • Vars
        • K(d);S_FLIGHT::S(F),XP(c)
      • Refutation
        • P(b);
    • Try
      • Q(A);P_PINP(c)
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • S(i);N_GUARD::QAB(A),XS(i)
      • Refutation
        • P(e);N_SPINP(c),XQ(A)
  • Actual
    • S(F);XP(c)
    • Threat
      • R(E)
    • Vars
      • K(d);P-FLIGHT,XS(F)::S(D)
      • K(d);P-FLIGHT::S(D),XP(b)
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