MESON Chess Problem Database

Problem Display
PID: 161716 (3n3B/3B4/3p4/pp1k1p2/1P2N3/3p2P1/1N2nK2/2Q4b w - - 0 1)

Kettner, Karl Werner

Welt im Bild (Leipziger NN), 1936

(First published on Sun Mar 8 1936)

3n3B/3B4/3p4/pp1k1p2/1P2N3/3p2P1/1N2nK2/2Q4b

#2

8 + 9

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qxh1#
    • 1...Sxc1
      • 2.Sc3#
    • 1...Sg1
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sxg3
      • 2.Sc3#
    • 1...Sd4
      • 2.Sc3#
    • 1...Sf4
      • 2.Sc3#
    • 1...Sc6
      • 2.Qxc6#
    • 1...Se6
      • 2.Bc6#
      • 2.Qc6#
    • 1...Sb7
      • 2.Qc6#
    • 1...Sf7
      • 2.Qc6#
    • 1...fxe4
      • 2.Qg5#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Sf6#
      • 1...fxe4
        • 2.Qg5#
      • 1...Bxe4!
    • 1.Qf4?
      • threat
        • 2.Sf6#
        • 2.Qxf5#
      • 1...Sxg3
        • 2.Sc3#
        • 2.Sf6#
      • 1...Sxf4
        • 2.Sc3#
      • 1...axb4
        • 2.Qxf5#
      • 1...fxe4
        • 2.Qg5#
        • 2.Qf5#
      • 1...Sd4
        • 2.Sc3#
        • 2.Sf6#
      • 1...Sc6
        • 2.Sf6#
      • 1...Sf7
        • 2.Sf6#
      • 1...Bxe4!
    • 1.Qxh1?
      • threat
        • 2.Sd2#
        • 2.Sc3#
        • 2.Sc5#
        • 2.Sg5#
      • 1...Sxg3
        • 2.Sc3#
        • 2.Sxg3#
      • 1...fxe4
        • 2.Qh5#
      • 1...Sg1
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sf4
        • 2.Sc3#
      • 1...d2
        • 2.Sxd2#
        • 2.Sc3#
        • 2.Sc5#
        • 2.Sg5#
      • 1...f4
        • 2.Sc3#
      • 1...axb4!
    • 1.Qc5+?
      • 1...Kxe4
        • 2.Bxf5#
        • 2.Qxf5#
      • 1...dxc5!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.Qxd3#
      • 1...Bxe4
        • 2.Qb3#
      • 1...Sxc3
        • 2.Sxc3#
      • 1...fxe4
        • 2.Qb3#
      • 1...Sd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • K(f);OGATEB,S_FLIGHT,XS(F)::QAB(A),XB(a)
    • S(b);N_GUARD,XQ(A)::S(F)
    • S(b);N_GUARD::S(F)
    • S(b);N_GUARD::S(F),XS(b)
    • S(b);N_GUARD,XP(D)::S(F)
    • S(i);N_GUARD::QAB1(A),XS(i)
    • S(i);N_GUARD::QAB1(A)
    • P(g);OGATEB,SBLOCK,XS(F)::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • P(g);OGATEB,SBLOCK,XS(F)::QAR(A)
      • Refutation
        • B(a);XS(F)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD,XQ(A)::S(F)
        • P(d);XP(E)::QAR2(A),XP(g)
        • S(i);::S(F)
      • Refutation
        • B(a);XS(F)
    • Try
      • Q(A);XB(a)
      • Threat
        • DUALS(4)
      • Vars
        • P(g);OGATEB,P_SPINP(g),SBLOCK,XS(F)::QAR(A)
        • S(b);::QAB(A)+S(F),DCHECK
        • S(b);::QAB(A)+S(F),DCHECK,XS(b)
        • P(g);::QAB(A)+S(F),DCHECK
      • Refutation
        • P(d);XP(E)
    • Try
      • Q(A);CHECK
      • Refutation
        • P(h);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • S(F)
    • Vars
      • K(f);S_FLIGHT,XS(F)::QAB1(A),XP(c)
      • B(a);SBLOCK,XS(F)::QAB(A)
      • S(b);XQ(A)::S(F),XS(b)
      • P(g);SBLOCK,XS(F)::QAB(A)
      • S(b);N_GUARD::QAR1(A),XS(b)
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