MESON Chess Problem Database

Problem Display
PID: 157842 (8/1K6/Nn6/2Bk4/P2b1Q2/8/8/3B4 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Schweizerische Schachzeitung, 1907

8/1K6/Nn6/2Bk4/P2b1Q2/8/8/3B4

#2

6 + 3

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qxd4#
    • 1...Bxc5
      • 2.Sc7#
    • 1...Sxa4
      • 2.Bb3#
    • 1...Sd7
      • 2.Bb3#
    • 1...Sa8
      • 2.Bb3#
    • 1...Sc8
      • 2.Bb3#
  • Tries
    • 1.Sb4+?
      • 1...Kc4
        • 2.Qxd4#
      • 1...Ke6
        • 2.Bg4#
      • 1...Kxc5!
    • 1.Sc7+?
      • 1...Kc4
        • 2.Qxd4#
      • 1...Kxc5!
    • 1.Qd6+?
      • 1...Kc4
        • 2.Qxd4#
      • 1...Ke4!
    • 1.Qe4+?
      • 1...Kc4
        • 2.Qxd4#
      • 1...Kxe4!
  • Keys
    • 1.Bc2!
      • 1...Kc4
        • 2.Qxd4#
      • 1...Ke6
        • 2.Qf5#
      • 1...Bxc5
        • 2.Sc7#
      • 1...Sxa4
        • 2.Bb3#
      • 1...Ba1
        • 2.Qe4#
      • 1...Bg1
        • 2.Qe4#
      • 1...Bb2
        • 2.Qe4#
      • 1...Bf2
        • 2.Qe4#
      • 1...Bc3
        • 2.Qe4#
      • 1...Be3
        • 2.Qe4#
      • 1...Be5
        • 2.Qf7#
      • 1...Bf6
        • 2.Qe4#
      • 1...Bg7
        • 2.Qe4#
      • 1...Bh8
        • 2.Qe4#
      • 1...Sc4
        • 2.Qe4#
      • 1...Sd7
        • 2.Bb3#
      • 1...Sa8
        • 2.Bb3#
      • 1...Sc8
        • 2.Bb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINB(a),S_FLIGHT::QAR1(C),XB(a)
    • B(a);SBLOCK,XB(D)::S(E)
    • S(c);N_GUARD,XP(B)::B(A)
    • S(c);N_GUARD::B(A)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P_SPINB(a),S_FLIGHT::QAR1(C),XB(a)
        • K(b);S_FLIGHT::B(A)
      • Refutation
        • K(b);P-FLIGHT,XB(D)
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P_SPINB(a),S_FLIGHT::QAR1(C),XB(a)
      • Refutation
        • K(b);P-FLIGHT,XB(D)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(C),XB(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P_SPINB(a),S_FLIGHT::QAR1(C),XB(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • B(A);
    • Vars
      • K(b);P_SPINB(a),S_FLIGHT::QAR1(C),XB(a)
      • K(b);S_FLIGHT::QAB1(C)
      • B(a);SBLOCK,XB(D)::S(E)
      • S(c);N_GUARD,XP(B)::B(A)
      • B(a);::QAB1(C)
      • B(a);SBLOCK::QAB(C)
      • S(c);SBLOCK::QAB1(C)
      • S(c);N_GUARD::B(A)
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