MESON Chess Problem Database

Problem Display
PID: 163062 (2r1B3/3N4/8/3kPPn1/1Rb2nR1/1N6/2Q1P3/7K w - - 0 1)

Kettner, Karl Werner

Welt im Bild (Leipziger NN), 1931

(First published on Sun Oct 18 1931)

2r1B3/3N4/8/3kPPn1/1Rb2nR1/1N6/2Q1P3/7K

#2

10 + 5

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qxc4#
    • 1...Ra8
      • 2.Qxc4#
    • 1...Rb8
      • 2.Qxc4#
    • 1...Rd8
      • 2.Qxc4#
    • 1...Rxe8
      • 2.Qxc4#
    • 1...Bxe2
      • 2.Rd4#
    • 1...Bd3
      • 2.Rd4#
    • 1...Bb5
      • 2.Rd4#
    • 1...Ba6
      • 2.Rd4#
  • Tries
    • 1.Rb5+?
      • 1...Kc6
        • 2.Qxc4#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Bxb5!
    • 1.e4+?
      • 1...Kc6
        • 2.Qxc4#
      • 1...Sxe4!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sf6#
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc6
        • 2.Qxc4#
      • 1...Rxe8
        • 2.Qxc4#
      • 1...Rc6
        • 2.Qd4#
      • 1...Sh5
        • 2.Sb6#
      • 1...Se4
        • 2.Sb6#
      • 1...Sh7
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • K(c);P_SPINB(a),S_FLIGHT::QAR2(B),XB(a)
    • R(e);N_GUARD::QAB1(B),XB(a)
    • R(e);N_GUARD,XB(J)::QAB1(B),XB(a)
    • B(a);OGATE,XP(C)::R1(E)
    • B(a);OGATE::R1(E)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(c);P_SPINB(a),S_FLIGHT::QAR2(B),XB(a)
        • R(e);N_GUARD,P_SPINR(e)::R1(E),XR(e)
      • Refutation
        • B(a);XR(E)
    • Try
      • P(C);CHECK
      • Vars
        • K(c);P_SPINB(a),S_FLIGHT::QAR2(B),XB(a)
      • Refutation
        • S(d);XP(C)
  • Actual
    • Q(B);
    • Threat
      • S(I)
    • Vars
      • K(c);P_SPINB(a),P_SPINS(b),S_FLIGHT::QAB1(B)
      • K(c);P_SPINB(a),S_FLIGHT::QAR2(B),XB(a)
      • R(e);N_GUARD,XB(J)::QAB1(B),XB(a)
      • R(e);SBLOCK::QAR1(B)
      • S(b);::S(I)
      • S(d);SBLOCK::S(I)
      • S(d);N_GUARD::QAB(B)
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