MESON Chess Problem Database

Problem Display
PID: 245904 (8/1K4p1/1pR3N1/1p1k2N1/1q2p1r1/1P3Bp1/1B4P1/8 w - - 0 1)

Hoffmann, Fritz

Europa-Rochade, 1992

8/1K4p1/1pR3N1/1p1k2N1/1q2p1r1/1P3Bp1/1B4P1/8

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Se7#
    • 1...Qd2
      • 2.Se7#
    • 1...Qa5
      • 2.Se7#
    • 1...Qe7+
      • 2.Sxe7#
    • 1...Qxb3
      • 2.Se7#
    • 1...Qa4
      • 2.Se7#
    • 1...Qc4
      • 2.Se7#
    • 1...Rf4
      • 2.Sxf4#
    • 1...Rxg5
      • 2.Sf4#
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Sf6#
      • 1...Qe7+
        • 2.Sxe7#
      • 1...Qxe4
        • 2.Se7#
      • 1...Rxe4
        • 2.Sf4#
      • 1...Qc3
        • 2.Rd6#
      • 1...Qd6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD::S(G)
    • Q(b);CHECK,N_GUARD::S(G),XQ(b)
    • Q(b);N_GUARD,XP(C)::S(G)
    • R(d);N_GUARD::S(G),XR(d)
    • R(d);N_GUARD,XS(E)::S(G)
  • Actual
    • S(E);XP(c)
    • Threat
      • B(D)+S(E),DCHECK
    • Vars
      • Q(b);CHECK,N_GUARD::S(G),XQ(b)
      • Q(b);N_GUARD,P_SPINQ(b),XS(E)::S(G)
      • R(d);N_GUARD,P_SPINR(d),XS(E)::S(G)
      • Q(b);N_GUARD::R1(F)
      • Q(b);N_GUARD::R1(F),XQ(b)
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