MESON Chess Problem Database

Problem Display
PID: 232654 (r3kN2/2PRq2P/6P1/pKB5/B1p4b/1p6/2P1Q3/4r3 w - - 0 1)

Hoffmann, Fritz

Freie Presse, 1993

r3kN2/2PRq2P/6P1/pKB5/B1p4b/1p6/2P1Q3/4r3

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf8
      • 2.h8Q#
    • 1...Ra6
      • 2.Rd8#
      • 2.c8Q#
      • 2.c8R#
    • 1...Ra7
      • 2.Rd8#
      • 2.c8Q#
      • 2.c8R#
    • 1...Rb8+
      • 2.cxb8Q#
      • 2.cxb8R#
    • 1...Rd8
      • 2.Rxd8#
      • 2.cxd8Q#
      • 2.cxd8R#
  • Tries
    • 1.Rxe7+?
      • 1...Kxf8
        • 2.Rf7#
        • 2.g7#
        • 2.h8Q#
        • 2.h8R#
      • 1...Bxe7!
  • Keys
    • 1.Kxc4!
      • threat
        • 2.Rd8#
      • 1...Qxe2+
        • 2.Rd3#
      • 1...Qe4+
        • 2.Rd4#
      • 1...Qe6+
        • 2.Rd5#
      • 1...Kxf8
        • 2.h8Q#
      • 1...Rd8
        • 2.Rxd8#
        • 2.cxd8Q#
        • 2.cxd8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(h);P-FLIGHT,XS(J)::P=Q
    • R(g);CHECK,OGATE::PXR(g)=Q
  • Tries
    • Try
      • R(H);CHECK,XQ(f)
      • Refutation
        • B(d);P_SPINB(d),XR(H)
  • Actual
    • K(D);S_FLIGHT,XP(c)
    • Threat
      • B(C)+R(H),DCHECK
    • Vars
      • Q(f);CHECK,N_SPINQ(f),XQ(B)::B(C)+R(H)
      • Q(f);CHECK::B(C)+R(H)
      • K(h);P-FLIGHT,XS(J)::P=Q
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