MESON Chess Problem Database

Problem Display
PID: 274476 (8/4p1N1/2p3K1/2rpkN2/2b2p2/5B2/4p2b/1n2Q3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

idee & form, 2021

8/4p1N1/2p3K1/2rpkN2/2b2p2/5B2/4p2b/1n2Q3

#2

5 + 10

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Qxe2#
    • 1...Bb3
      • 2.Qxe2#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qd4#
      • 1...d4
        • 2.Qxd4#
      • 1...Bg1!
    • 1.Qc3+?
      • 1...d4
        • 2.Qxd4#
      • 1...Sxc3!
    • 1.Qh4?
      • threat
        • 2.Qxe7#
      • 1...e6
        • 2.Qf6#
      • 1...d4!
    • 1.Qg1?
      • threat
        • 2.Qd4#
      • 1...d4
        • 2.Qxd4#
      • 1...Bxg1!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qb8#
      • 1...Rb5
        • 2.Qxe7#
      • 1...Bb5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(d);N_GUARD::QAR(A),XP(b)
  • Tries
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • QAB1(A)
      • Vars
        • P(g);::QAB1(A),XP(g)
      • Refutation
        • B(c);
    • Try
      • Q(A);CHECK,N_PINP(b)
      • Vars
        • P(g);P_SPINP(g)::QAB1(A),XP(g)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • QAR2(A),XP(j)
      • Vars
        • P(j);N_GUARD::QAB1(A)
      • Refutation
        • P(g);
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • QAB1(A)
      • Vars
        • P(g);::QAB1(A),XP(g)
      • Refutation
        • B(c);XQ(A)
  • Actual
    • Q(A);N_PINP(b)
    • Threat
      • QAB(A)
    • Vars
      • R(f);OGATE::QAR2(A),XP(j)
      • B(d);OGATE::QAB1(A)
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