MESON Chess Problem Database

Problem Display
PID: 213674 (4R3/3Q2K1/8/3pNp2/N1pqkp2/2Bppp2/8/8 w - - 0 1)

Rothwell, Stephen

Badische Neueste Nachrichten, 1992

4R3/3Q2K1/8/3pNp2/N1pqkp2/2Bppp2/8/8

#2

6 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Sxc5#
    • 1...Qxe5+
      • 2.Rxe5#
    • 1...Qb6
      • 2.Sc6#
    • 1...Qa7
      • 2.Sxc4#
      • 2.Sg4#
      • 2.Sc6#
      • 2.Sg6#
      • 2.Sf7#
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qxd4#
      • 1...Qxe5+
        • 2.Rxe5#
      • 1...Qxa7+
        • 2.Sd7#
      • 1...Qxc3
        • 2.Sxc3#
      • 1...Qc5
        • 2.Sxc5#
      • 1...Qb6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(e);N_GUARD,N_PINS(C)::S(B),XQ(e)
    • Q(e);CHECK,OGATE,P_SPINQ(e),XS(C)::R1(F),XQ(e)
    • Q(e);N_PINS(C)::R(F)+S(C)
  • Actual
    • Q(D);
    • Threat
      • QAR1(D),XQ(e)
    • Vars
      • Q(e);CHECK,OGATE,P_SPINQ(e),XS(C)::R1(F),XQ(e)
      • Q(e);CHECK,N_PINS(C),XQ(D)::R(F)+S(C)
      • Q(e);XB(A)::S(B),XQ(e)
      • Q(e);N_GUARD,N_PINS(C)::S(B),XQ(e)
      • Q(e);N_PINS(C)::R(F)+S(C)
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