MESON Chess Problem Database

Problem Display
PID: 226854 (3r4/1p3p2/1N6/Q1nNn2R/1p1kp3/b3Rp2/3P4/7K w - - 0 1)

Ahues, Herbert Siegfried Oskar

Freie Presse, 2004

3r4/1p3p2/1N6/Q1nNn2R/1p1kp3/b3Rp2/3P4/7K

#2

7 + 10

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Qc3#
  • Tries
    • 1.Sc7?
      • threat
        • 2.Sb5#
      • 1...Sb3
        • 2.Qxe5#
      • 1...Sa4
        • 2.Qxe5#
      • 1...Sa6
        • 2.Qxe5#
      • 1...Se6
        • 2.Qxe5#
      • 1...Scd7
        • 2.Qd5#
      • 1...Scd3!
    • 1.Se7?
      • threat
        • 2.Sf5#
      • 1...Sc4
        • 2.Qxc5#
      • 1...Sg4
        • 2.Qxc5#
      • 1...Sc6
        • 2.Qxc5#
      • 1...Sg6
        • 2.Qxc5#
      • 1...Sed7
        • 2.Rd5#
      • 1...f5
        • 2.Sxf5#
      • 1...Sed3!
    • 1.Qxb4+?
      • 1...Sc4
        • 2.Qc3#
        • 2.Qxc4#
      • 1...Bxb4!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sb5#
      • 1...bxc3
        • 2.Qxc3#
      • 1...Sb3
        • 2.Qxe5#
      • 1...Scd3
        • 2.Rxe4#
      • 1...Sa4
        • 2.Qxe5#
      • 1...Sa6
        • 2.Qxe5#
      • 1...Se6
        • 2.Qxe5#
      • 1...Scd7
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATE::QAB1(D)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • S(f);OGATE::QAB1(D),XS(g)
        • S(f);OGATE::QAR1(D)
      • Refutation
        • S(f);
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • S(g);::QAB1(D),XS(f)
        • S(g);OGATE::R1(F)
        • P(i);::S(E),XP(i)
      • Refutation
        • S(g);
    • Try
      • Q(D);CHECK,XP(c)
      • Refutation
        • B(a);XQ(D)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • P(c);OGATE,XS(E)::QAB1(D),XP(c)
      • S(f);OGATE::QAB1(D),XS(g)
      • S(f);N_GUARD,SBLOCK::R1(C),XP(e)
      • S(f);OGATE::QAR1(D)
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