MESON Chess Problem Database

Problem Display
PID: 20903 (8/2p3NB/2p2pr1/q2k4/1pN5/1P2P3/n1K3p1/6Q1 w - - 0 1)

Larsen, Karl Adolf Koefoed

Skakbladet, 1913

8/2p3NB/2p2pr1/q2k4/1pN5/1P2P3/n1K3p1/6Q1

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxg2#
    • 1...Rg3
      • 2.e4#
    • 1...Rg5
      • 2.e4#
    • 1...Rh6
      • 2.e4#
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qf5#
      • 1...Ke4
        • 2.Qxg2#
      • 1...Kc5
        • 2.Qf5#
      • 1...Rg5
        • 2.e4#
      • 1...c5
        • 2.Qf3#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(e);P_SPINR(h),S_FLIGHT::QAB(A),XP(b)
    • R(h);::P(D)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(e);P_SPINR(h),S_FLIGHT::QAB(A),XP(b)
      • K(e);P-FLIGHT::QAR(A)
      • R(h);::P(D)
      • P(f);SBLOCK::QAB(A)
      • P(g);::QAR2(A),XP(g)
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