MESON Chess Problem Database

Problem Display
PID: 240214 (8/4R3/2p2p2/4q3/1Q1P1N2/3Nk3/2P3B1/1K6 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Problem-Forum, 2016

8/4R3/2p2p2/4q3/1Q1P1N2/3Nk3/2P3B1/1K6

#2

8 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Rxe4#
    • 1...Qe6
      • 2.Rxe6#
    • 1...f5
      • 2.Rxe5#
  • Tries
    • 1.Sd5+?
      • 1...Ke2
        • 2.Qe1#
      • 1...cxd5!
    • 1.dxe5?
      • threat
        • 2.exf6#
      • 1...fxe5
        • 2.Rxe5#
      • 1...f5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qe1#
      • 1...Ke2
        • 2.Qe1#
      • 1...Qxe6
        • 2.Rxe6#
      • 1...Qg3
        • 2.Sef4#
      • 1...Qb8
        • 2.Sc7#
      • 1...Qa5
        • 2.Sec5#
      • 1...Qb5
        • 2.Sec5#
      • 1...Qh5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • Q(b);OGATE::R1(H),XQ(b)
    • Q(b);OGATEB::R(H),XQ(b)
    • P(d);N_GUARD::R(H),XQ(b)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • P(c);XS(G)
    • Try
      • P(F);XQ(b)
      • Threat
        • R(H)+P(F),XP(d)
      • Vars
        • P(d);OGATE,P_SPINP(d),XP(F)::R(H),XP(d)
      • Refutation
        • P(d);
  • Actual
    • S(G);N_PINQ(b)
    • Threat
      • QAR2(E)
    • Vars
      • K(a);P-FLIGHT::QAR1(E)
      • Q(b);OGATE,P_SPINQ(b),XS(G)::R(H),XQ(b)
      • Q(b);::R(H)+S(G)
      • Q(b);P_PINQ(E)::R(H)+S(G)
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