MESON Chess Problem Database

Problem Display
PID: 107988 (3b2K1/Q1p1k3/1Pp1rR2/2P1P2B/8/8/8/3R4 w - - 0 1)

Dittrich, Stefan

Mat, 1979

3b2K1/Q1p1k3/1Pp1rR2/2P1P2B/8/8/8/3R4

#2

8 + 5

261 Mat 1980
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qa2?
      • threat
        • 2.Rxe6#
        • 2.Qxe6#
      • 1...Rxe5
        • 2.Qf7#
      • 1...Rd6
        • 2.Qf7#
      • 1...Rxf6!
  • Keys
    • 1.bxc7!
      • threat
        • 2.cxd8Q#
        • 2.cxd8S#
        • 2.cxd8B#
        • 2.cxd8R#
        • 2.c8S#
      • 1...Rxe5
        • 2.cxd8Q#
        • 2.cxd8B#
      • 1...Rxf6
        • 2.cxd8S#
      • 1...Bxc7
        • 2.Qxc7#
      • 1...Rd6
        • 2.c8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);N_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);OGATE,XP(C)::QAR1(G)
        • R(b);OGATE::QAR1(G)
      • Refutation
        • R(b);XR(F)
  • Actual
    • P(E);XP(c)
    • Threat
      • DUALS(5)
    • Vars
      • R(b);XP(C)::PXB(e)=Q
      • R(b);XR(F)::PXB(e)=S
      • B(e);OGATE,P_SPINB(e),XP(E)::QAR2(G),XB(e)
      • R(b);::P=S
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