MESON Chess Problem Database

Problem Display
PID: 110104 (8/2p5/2K5/5N2/1p3B2/1Qnk2p1/6P1/4R3 w - - 0 1)

Knuppert, Hugo

Larsen, Lars Aksglade (= Aksglade, Lars)

Nederlandse Bond van Probleemvrienden, 1961

8/2p5/2K5/5N2/1p3B2/1Qnk2p1/6P1/4R3

#2

6 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se3?
      • 1...Kd4
        • 2.Qc4#
      • 1...Ke4
        • 2.Qc4#
      • 1...Kd2!
    • 1.Sd6?
      • 1...Kd4
        • 2.Qc4#
      • 1...cxd6!
    • 1.Ra1?
      • 1...Ke2
        • 2.Qc2#
      • 1...Ke4!
    • 1.Rb1?
      • 1...Ke2
        • 2.Qc2#
      • 1...Ke4!
    • 1.Rc1?
      • 1...Ke2
        • 2.Qc2#
      • 1...Ke4!
    • 1.Rd1+?
      • 1...Ke2
        • 2.Qc2#
      • 1...Ke4!
    • 1.Rg1?
      • 1...Ke2
        • 2.Qc2#
      • 1...Ke4!
    • 1.Rh1?
      • 1...Ke2
        • 2.Qc2#
      • 1...Ke4!
    • 1.Qd1+?
      • 1...Kc4
        • 2.Se3#
      • 1...Sxd1!
    • 1.Qc2+?
      • 1...Kc4
        • 2.Re4#
      • 1...Kxc2!
  • Keys
    • 1.Rf1!
      • 1...Ke2
        • 2.Qc4#
      • 1...Ke4
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(C)
        • K(b);N_SPINS(a),S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
    • Try
      • S(E);
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(C)
      • Refutation
        • P(e);XS(E)
    • Try
      • R(A);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • Q(C);CHECK,N_PINS(a)
      • Vars
        • K(b);S_FLIGHT::S(E)
      • Refutation
        • S(a);XQ(C)
    • Try
      • Q(C);CHECK,N_PINS(a)
      • Vars
        • K(b);P_SPINS(a),S_FLIGHT::R(A)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • R(A);
    • Vars
      • K(b);N_SPINS(a),S_FLIGHT::QAB(C)
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