MESON Chess Problem Database

Problem Display
PID: 21992 (7Q/1Kn2Prn/1NRN3P/R2qk3/2p3Pb/p2bPP2/1r6/B7 w - - 0 1)

Larsen, Karl Adolf Koefoed

2nd Prize, Brisbane Courier, 1923-1924

7Q/1Kn2Prn/1NRN3P/R2qk3/2p3Pb/p2bPP2/1r6/B7

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Sxc4#
    • 1...Bc2
      • 2.Sxc4#
    • 1...Be4
      • 2.Sxc4#
    • 1...Bf5
      • 2.Sxc4#
    • 1...Bg6
      • 2.Sxc4#
  • Keys
    • 1.f8S!
      • threat
        • 2.Sf7#
      • 1...Sb5+
        • 2.Sbd7#
      • 1...Se6+
        • 2.Sd7#
      • 1...Kf6
        • 2.Qxg7#
      • 1...Bg6
        • 2.Sxc4#
      • 1...Bf6
        • 2.f4#
      • 1...Sg5
        • 2.Qxg7#
      • 1...Sf6
        • 2.f4#

This is a version of 109858

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • B(c);N_GUARD::S(H),XP(d)
  • Actual
    • P(K);
    • Threat
      • S(H)
    • Vars
      • S(h);CHECK,N_PINS(F),N_SPINQ(f)::S(F)
      • S(h);CHECK,SBLOCK::S(K)
      • K(g);N_SPINQ(f),S_FLIGHT::QAB1(L),XR(i)
      • B(c);N_GUARD::S(H),XP(d)
      • B(e);SBLOCK::P(C)
      • S(j);N_GUARD,S_CUTB(e)::QAB(L),XR(i)
      • S(j);SBLOCK::P(C)
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