MESON Chess Problem Database

Problem Display
PID: 93147 (Nb1R4/3P2n1/2Nk4/1p3P2/nP2P3/8/2Q4K/8 w - - 0 1)

Jonsson, Hermann Leonard

Tidskrift for Schack, 1904

Nb1R4/3P2n1/2Nk4/1p3P2/nP2P3/8/2Q4K/8

#2

9 + 5

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sb6
      • 2.Qc5#
    • 1...Se8
      • 2.dxe8Q#
      • 2.dxe8S#
      • 2.dxe8B#
      • 2.dxe8R#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Qd5#
        • 2.e5#
      • 1...Sc5
        • 2.Qd5#
        • 2.Qxc5#
      • 1...Sc3
        • 2.Qc5#
        • 2.e5#
      • 1...Sb6
        • 2.Qc5#
        • 2.e5#
      • 1...bxc4!
  • Keys
    • 1.Qg2!
      • threat
        • 2.e5#
      • 1...Kxc6+
        • 2.e5#
      • 1...Sxf5
        • 2.Qg6#

This anticipates 92866(1907)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • P(D)
    • Vars
      • K(c);CHECK,P-FLIGHT,XS(F)::QAB(A)+P(D)
      • S(d);N_GUARD,XP(E)::QAR(A)
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