MESON Chess Problem Database

Problem Display
PID: 21862 (b7/4BB2/1p1N1n2/pPkq2Q1/4P3/1R6/2K1N2p/6b1 w - - 0 1)

Kraemer, Adolf Herrmann Rudolf Ferdinand

1st Prize, Kockelkorn MT, 1921

b7/4BB2/1p1N1n2/pPkq2Q1/4P3/1R6/2K1N2p/6b1

#2

9 + 8

3360 Simple Two-move Themes 1924
328 Schweizerische Schachzeitung 1972

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Sc4#
      • 2.Sb7#
      • 2.Sc8#
      • 2.Se8#
    • 1...Qf5
      • 2.Sc4#
      • 2.Sxf5#
      • 2.Sb7#
      • 2.Sc8#
      • 2.Se8#
    • 1...Qxg5
      • 2.Sc4#
      • 2.Sf5#
      • 2.Sb7#
      • 2.Sc8#
      • 2.Se8#
  • Tries
    • 1.Sf5+?
      • 1...Qd6
        • 2.Bxd6#
      • 1...Kc4!
    • 1.Qe3+?
      • 1...Qd4
        • 2.Sc4#
        • 2.Sf5#
        • 2.Sb7#
        • 2.Sc8#
        • 2.Se8#
      • 1...Bxe3!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qa3#
      • 1...Qxb3+
        • 2.Kxb3#
      • 1...Qc4+
        • 2.Sxc4#
      • 1...Qxe4+
        • 2.Sxe4#
      • 1...Qd1+
        • 2.Kxd1#
      • 1...Qd2+
        • 2.Kxd2#
      • 1...Qd3+
        • 2.Kxd3#
      • 1...Qd4
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK,N_PINQ(e)
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e)::B(H),XQ(e)
      • Refutation
        • K(d);P-FLIGHT,P_SPINQ(e)
    • Try
      • Q(F);CHECK,N_PINQ(e)
      • Refutation
        • B(a);XQ(F)
  • Actual
    • Q(F);N_PINQ(e)
    • Threat
      • QAB(F)
    • Vars
      • Q(e);CHECK,XR(C)::QAR(F)+K(A),XQ(e)
      • Q(e);CHECK,N_GUARD::B(H)+S(G),XQ(e)
      • Q(e);CHECK,XP(D)::B(H)+S(G),DCHECK,XQ(e)
      • Q(e);CHECK::QAR(F)+K(A),XQ(e)
      • Q(e);::B(H)+S(G),DCHECK
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