MESON Chess Problem Database

Problem Display
PID: 132571 (5N2/r3Q3/6rk/8/7K/8/8/R7 w - - 0 1)

Hoffmann, Klaus Peter

Der neue Tag (Weiden)/Amberger Zeitung, 1994

5N2/r3Q3/6rk/8/7K/8/8/R7

#2

4 + 3

6114 Problemschach-Jahrbuch (1994) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.Qxg5#
    • 1...Rga6
      • 2.Qg5#
    • 1...Rb6
      • 2.Qg5#
    • 1...Rc6
      • 2.Qg5#
    • 1...Rd6
      • 2.Qg5#
    • 1...Re6
      • 2.Qg5#
    • 1...Rf6
      • 2.Qxf6#
    • 1...Rxa1
      • 2.Qh7#
    • 1...Ra2
      • 2.Qh7#
    • 1...Ra3
      • 2.Qh7#
    • 1...Ra5
      • 2.Qh7#
    • 1...Raa6
      • 2.Qh7#
    • 1...Ra8
      • 2.Qh7#
  • Tries
    • 1.Rxa7?
      • threat
        • 2.Qh7#
      • 1...Rg7
        • 2.Qxg7#
      • 1...Rg4+!
    • 1.Qe3+?
      • 1...Rg5
        • 2.Qxg5#
      • 1...Kg7!
  • Keys
    • 1.Ra6!
      • threat
        • 2.Rxg6#
      • 1...Rgxa6
        • 2.Qg5#
      • 1...Raxa6
        • 2.Qh7#
      • 1...Rb6
        • 2.Rxb6#
        • 2.Qg5#
      • 1...Rc6
        • 2.Rxc6#
        • 2.Qg5#
      • 1...Rd6
        • 2.Rxd6#
        • 2.Qg5#
      • 1...Re6
        • 2.Rxe6#
        • 2.Qg5#
      • 1...Rf6
        • 2.Rxf6#
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • R(a);N_GUARD::QAB1(C),XR(a)
    • R(a);N_GUARD::QAB1(C)
    • R(a);OGATEB::QAR2(C),XR(a)
    • R(c);N_GUARD,XR(A)::QAR1(C)
    • R(c);N_GUARD::QAR1(C)
  • Tries
    • Try
      • R(A);XR(c)
      • Threat
        • QAR1(C)
      • Vars
        • R(a);N_GUARD::QAB1(C),XR(a)
      • Refutation
        • R(a);CHECK
    • Try
      • Q(C);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB1(C),XR(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(A);P_PINR(a)
    • Threat
      • R1(A),XR(a)
    • Vars
      • R(a);N_SPINR(a),SBLOCK,XR(A)::QAB1(C)
      • R(c);N_GUARD,N_SPINR(a),SBLOCK,XR(A)::QAR1(C)
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