MESON Chess Problem Database

Problem Display
PID: 21044 (7b/8/Q7/8/1K4n1/8/1k1P4/7R w - - 0 1)

Shinkman, William Anthony

Pittsburgh Gazette-Times, 1915

7b/8/Q7/8/1K4n1/8/1k1P4/7R

#2

4 + 3

274 diagrammes 1973
3295 Einfuhrung in die Welt des Schachproblem 1984
3713 Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qb1#
        • 2.Qb3#
      • 1...Ka2
        • 2.Qb1#
        • 2.Qa3#
        • 2.Qb3#
      • 1...Bc3+!
    • 1.Qg6?
      • threat
        • 2.Qb1#
      • 1...Ka2
        • 2.Qb1#
      • 1...Bc3+!
    • 1.d4?
      • threat
        • 2.Qe2#
      • 1...Kc2
        • 2.Qe2#
      • 1...Se3!
  • Keys
    • 1.Qe2!
      • threat
        • 2.d3#
        • 2.d4#
      • 1...Bc3+
        • 2.dxc3#
      • 1...Ka2
        • 2.d4#
      • 1...Kc2
        • 2.d3#
        • 2.d4#
      • 1...Bd4
        • 2.d3#
      • 1...Se3
        • 2.dxe3#

This anticipates 200536(2001)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Refutation
        • B(c);CHECK
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • K(a);P-FLIGHT::QAB1(D)
      • Refutation
        • B(c);CHECK
    • Try
      • P(B);
      • Threat
        • QAR(D)
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • S(b);
  • Actual
    • Q(D);
    • Threat
      • DUALS(2)
    • Vars
      • B(c);CHECK,OGATE::QAR(D)+P(B),XB(c)
      • K(a);P-FLIGHT::QAR(D)+P(B)
      • B(c);::QAR(D)+P(B)
      • S(b);OGATE::QAR(D)+P(B),XS(b)
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