MESON Chess Problem Database

Problem Display
PID: 160177 (8/8/2P4B/K3k3/2B1p2Q/8/8/8 w - - 0 1)

Rutberg, Nils

Tidskrift for Schack, 1923

8/8/2P4B/K3k3/2B1p2Q/8/8/8

#2

5 + 2

5454 Near Snap 2017
15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qg5#
    • 1...e3
      • 2.Qf4#
  • Tries
    • 1.Kb4?
      • 1...Kd4
        • 2.Qf6#
      • 1...Kf5
        • 2.Qg5#
      • 1...e3
        • 2.Qf4#
      • 1...Kd6!
    • 1.Kb6?
      • 1...Kf5
        • 2.Qg5#
      • 1...Kd6
        • 2.Bf4#
        • 2.Qf6#
      • 1...e3
        • 2.Qf4#
      • 1...Kd4!
    • 1.Be3?
      • threat
        • 2.Qf4#
      • 1...Kf5
        • 2.Qg5#
      • 1...Kd6!
    • 1.Bf4+?
      • 1...Kf5
        • 2.Qg5#
      • 1...Kd4!
    • 1.Qf2?
      • 1...e3
        • 2.Qf4#
      • 1...Kd6!
    • 1.Qg3+?
      • 1...Kf5
        • 2.Qg5#
      • 1...Kf6
        • 2.Qg5#
      • 1...Kd4!
    • 1.Qe7+?
      • 1...Kf5
        • 2.Qg5#
        • 2.Qe6#
      • 1...Kd4!
    • 1.Qd8?
      • 1...Kf5
        • 2.Qg5#
      • 1...e3!
  • Keys
    • 1.Kb5!
      • 1...Kd4
        • 2.Qf6#
      • 1...Kf5
        • 2.Qg5#
      • 1...Kd6
        • 2.Bf4#
      • 1...e3
        • 2.Qf4#

Anticipated by 24206(1900), 121468(1900)

This anticipates 190419(2001), 139326(2010)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR1(B)
    • P(a);::QAB1(B)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB(B)
        • K(b);P-FLIGHT::QAR1(B)
        • P(a);::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • P(a);::QAB1(B)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • B(E);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • P(a);::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • P(a);
  • Actual
    • K(C);P-FLIGHT
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAB(B)
      • K(b);P-FLIGHT::QAR1(B)
      • K(b);S_FLIGHT::B(E)
      • P(a);::QAB1(B)
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