MESON Chess Problem Database

Problem Display
PID: 207055 (7K/N7/2pp4/P1k5/p3p3/P2PP3/5B2/3Q4 w - - 0 1)

Schultz, Johan Gustaf

New York Clipper, 1865

7K/N7/2pp4/P1k5/p3p3/P2PP3/5B2/3Q4

#2

8 + 5

3713 Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qb3?
      • threat
        • 2.Qc4#
        • 2.d4#
      • 1...exd3
        • 2.e4#
      • 1...d5
        • 2.Qb4#
      • 1...axb3!
    • 1.Qxa4?
      • threat
        • 2.Qxc6#
        • 2.Qc4#
        • 2.Qd4#
      • 1...exd3
        • 2.Qxc6#
        • 2.Qd4#
        • 2.e4#
      • 1...d5
        • 2.Qxc6#
        • 2.Qb4#
      • 1...Kd5!
    • 1.Qg4?
      • 1...Kd5
        • 2.Qf5#
      • 1...exd3
        • 2.Qd4#
      • 1...d5!
    • 1.dxe4?
      • threat
        • 2.Qc2#
        • 2.Qc1#
        • 2.Qd4#
      • 1...Kc4
        • 2.Qc2#
      • 1...d5!
  • Keys
    • 1.Qf3!
      • 1...Kd5
        • 2.Qf5#
      • 1...exd3
        • 2.Qxc6#
      • 1...exf3
        • 2.e4#
      • 1...d5
        • 2.Qf8#

This anticipates 207126(1866)

There are these versions: 123427

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATE,XP(D)::B(B)+P(E)
        • P(e);SBLOCK::QAB1(A)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);XP(a)
      • Threat
        • DUALS(3)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
        • P(b);OGATE,XP(D)::QAB1(A)
      • Refutation
        • P(e);
    • Try
      • P(D);XP(b)
      • Threat
        • DUALS(3)
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
      • Refutation
        • P(e);
  • Actual
    • Q(A);
    • Vars
      • K(c);P-FLIGHT,P_SPINP(b)::QAR2(A)
      • P(b);OGATE,XP(D)::QAR1(A),XP(d)
      • P(b);OGATE,XQ(A)::B(B)+P(E)
      • P(e);OGATEB,SBLOCK::QAB(A)
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