MESON Chess Problem Database

Problem Display
PID: 2895 (4R3/2K5/8/2pkP3/3B4/1P3P2/2n5/6Q1 w - - 0 1)

Cauveren, Jonas Ephraim

Source?, 1904

4R3/2K5/8/2pkP3/3B4/1P3P2/2n5/6Q1

#2

7 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Bxc5?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sa1
        • 2.Qd4#
      • 1...Se1
        • 2.Qd4#
      • 1...Sa3
        • 2.Qd4#
      • 1...Sb4
        • 2.Qd4#
      • 1...Se3!
    • 1.Qg4?
      • threat
        • 2.Rd8#
        • 2.Qd7#
        • 2.Qe4#
      • 1...Sxd4
        • 2.Qd7#
        • 2.Qe4#
      • 1...cxd4!
    • 1.Qg6?
      • threat
        • 2.Rd8#
        • 2.Qe4#
        • 2.Qd6#
      • 1...Sxd4
        • 2.Qe4#
        • 2.Qd6#
      • 1...cxd4
        • 2.Qc6#
        • 2.Qd6#
      • 1...Kxd4!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qd8#
      • 1...Kxd4
        • 2.Qd2#
      • 1...cxd4
        • 2.e6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);XP(b)
      • Vars
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(a);N_GUARD::QAR1(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Refutation
        • P(b);XB(D)
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Refutation
        • K(c);P-FLIGHT,XB(D)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XB(D)::QAR2(A)
      • P(b);SBLOCK,XB(D)::QAR(A)+P(E)
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