MESON Chess Problem Database

Problem Display
PID: 45592 (4K3/1QP5/B1p4B/1P6/b3p2p/NRpk3P/6n1/4R3 w - - 0 1)

Karlstrom, Alfred Olaf

5th HM., BCF 054. Ty., 1946-1947

4K3/1QP5/B1p4B/1P6/b3p2p/NRpk3P/6n1/4R3

#2

10 + 7

133 The Problemist Supplement 2015

SOLUTION

  • SOUND
  • Sets
    • 1...cxb5
      • 2.Qxe4#
      • 2.Qd5#
    • 1...c5
      • 2.Qxe4#
      • 2.Qd5#
  • Keys
    • 1.Qxc6!
      • threat
        • 2.Qxe4#
        • 2.Qd5#
        • 2.Qd7#
        • 2.Qxc3#
        • 2.Qc4#
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Bxb3
        • 2.Qxe4#
      • 1...Bxb5
        • 2.Qd7#
      • 1...Sxe1
        • 2.Qc4#
      • 1...Se3
        • 2.Qxc3#
      • 1...Sf4
        • 2.Qxc3#
      • 1...e3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(H);XP(g)
    • Threat
      • DUALS(6)
    • Vars
      • K(c);N_SPINP(b),P-FLIGHT::QAR2(H)
      • B(d);N_SPINP(b),XR(C)::QAB1(H),XP(e)
      • B(d);P_PINQ(H),P_SPINB(d),XP(E)::QAR(H)
      • S(a);XR(A)::QAB1(H)
      • S(a);::QAR1(H),XP(b)
      • P(e);::QAR2(H)
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