MESON Chess Problem Database

Problem Display
PID: 108251 (8/8/5R2/k3N2b/P3R3/4p3/4P1Q1/7K w - - 0 1)

Dittrich, Stefan

Mat, 1979

8/8/5R2/k3N2b/P3R3/4p3/4P1Q1/7K

#2

7 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rc4?
      • threat
        • 2.Qd5#
        • 2.Qa8#
      • 1...Bf7
        • 2.Qa8#
      • 1...Be8
        • 2.Qa8#
      • 1...Bf3!
    • 1.Rg4?
      • threat
        • 2.Qd5#
        • 2.Qa8#
      • 1...Bf7
        • 2.Qa8#
      • 1...Be8
        • 2.Qa8#
      • 1...Bxg4!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sg4#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Sf7#
      • 1...Bf3+
        • 2.Sxf3#
      • 1...Bxe2
        • 2.Sd3#
      • 1...Bg4
        • 2.Sxg4#
      • 1...Bg6
        • 2.Sxg6#
      • 1...Bf7
        • 2.Sxf7#
      • 1...Be8
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAR(C)
      • Refutation
        • B(c);P_PINQ(C)
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAR(C)
      • Refutation
        • B(c);XR(E)
  • Actual
    • Q(C);
    • Threat
      • DUALS(6)
    • Vars
      • B(c);CHECK::QAR(C)+S(F),XB(c)
      • B(c);XP(B)::QAR(C)+S(F)
      • B(c);::QAR(C)+S(F),XB(c)
      • B(c);::QAR(C)+S(F)
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