MESON Chess Problem Database

Problem Display
PID: 235143 (r2n1RK1/2p3R1/r4p2/3PNknN/4pP2/4P3/8/6q1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach, 2019

r2n1RK1/2p3R1/r4p2/3PNknN/4pP2/4P3/8/6q1

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf2
      • 2.Rxg5#
    • 1...Qh2
      • 2.Rxg5#
    • 1...Qxe3
      • 2.Rxg5#
    • 1...Qa1
      • 2.Sg3#
      • 2.Rxg5#
    • 1...Qb1
      • 2.Sg3#
      • 2.Rxg5#
    • 1...Qc1
      • 2.Sg3#
      • 2.Rxg5#
    • 1...Qd1
      • 2.Sg3#
      • 2.Rxg5#
    • 1...Qe1
      • 2.Rxg5#
    • 1...Qf1
      • 2.Sg3#
      • 2.Rxg5#
    • 1...Qh1
      • 2.Sg3#
      • 2.Rxg5#
    • 1...Qg3
      • 2.Sxg3#
    • 1...Ra1
      • 2.Rxf6#
    • 1...Ra2
      • 2.Rxf6#
    • 1...Ra3
      • 2.Rxf6#
    • 1...Ra4
      • 2.Rxf6#
    • 1...Ra5
      • 2.Rxf6#
    • 1...R6a7
      • 2.Rxf6#
    • 1...Sge6
      • 2.Rxf6#
    • 1...c6
      • 2.Rxf6#
  • Keys
    • 1.Rg6!
      • threat
        • 2.Sg7#
      • 1...Qxe3
        • 2.Rxg5#
      • 1...Sge6
        • 2.Rxf6#
      • 1...Sde6
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 11
  • Sets
    • Q(a);N_GUARD::R1(F),XS(d)
    • Q(a);N_GUARD,XP(A)::R1(F),XS(d)
    • Q(a);N_GUARD::S(E),XQ(a)
    • R(e);N_GUARD::R1(G),XP(f)
    • S(d);P_PINR(F),S_CUTR(e)::R1(G),XP(f)
    • P(g);S_CUTR(e)::R1(G),XP(f)
  • Actual
    • R(F);
    • Threat
      • S(E)
    • Vars
      • Q(a);N_GUARD,XP(A)::R1(F),XS(d)
      • S(d);P_PINR(F),S_CUTR(e)::R1(G),XP(f)
      • S(i);P_PINR(G),S_CUTR(e)::R1(F),XP(f)
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