MESON Chess Problem Database

Problem Display
PID: 4579 (8/3N4/4P3/5p2/1Q1pk3/8/B2P2P1/3K4 w - - 0 1)

Budde, Otto C

Nordiske Skaktidende, 1880

8/3N4/4P3/5p2/1Q1pk3/8/B2P2P1/3K4

#2

7 + 3

3360 Simple Two-move Themes 1924
3310 2345 Chess Problems 1997
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Sc5#
      • 2.Bb1#
      • 2.Qb1#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Sc5#
      • 1...Kd3
        • 2.Sc5#
      • 1...f4!
    • 1.Qb1+?
      • 1...d3
        • 2.Qb4#
      • 1...Kf4!
    • 1.Qc4?
      • 1...f4
        • 2.Bb1#
      • 1...Kf4!
    • 1.Qb5?
      • 1...d3
        • 2.Qa4#
        • 2.Qc4#
        • 2.Qb4#
        • 2.Qe5#
      • 1...f4
        • 2.Sf6#
      • 1...Kf4!
    • 1.Qb7+?
      • 1...Kd3
        • 2.Sc5#
        • 2.Se5#
        • 2.Qf3#
        • 2.Qb1#
      • 1...Kf4!
    • 1.Qb8?
      • threat
        • 2.Sc5#
      • 1...Kd3
        • 2.Sc5#
        • 2.Qb1#
      • 1...d3
        • 2.Qe5#
        • 2.Qb4#
      • 1...f4!
  • Keys
    • 1.Qe7!
      • 1...Kd3
        • 2.Sc5#
      • 1...Kf4
        • 2.Qh4#
      • 1...f4
        • 2.Qh7#
      • 1...d3
        • 2.Qb4#

This anticipates 194020(1917), 231268(1927)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);N_PINP(a)
      • Threat
        • S(G)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::S(G)
      • Refutation
        • P(c);
    • Try
      • Q(E);CHECK,N_PINP(a)
      • Vars
        • P(a);OGATEB,P_SPINP(a),SBLOCK::QAR(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(c);SBLOCK::B(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);N_PINP(a)
      • Vars
        • P(c);SBLOCK::S(G)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);CHECK,N_PINP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);N_PINP(a)
      • Threat
        • S(G)
      • Refutation
        • P(c);
  • Actual
    • Q(E);N_PINP(a)
    • Vars
      • K(b);S_FLIGHT::S(G)
      • K(b);P-FLIGHT::QAR2(E)
      • P(c);OGATEB,SBLOCK::QAB(E)
      • P(a);OGATEB,SBLOCK::QAR(E)
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