MESON Chess Problem Database

Problem Display
PID: 236498 (1b1r4/4pR1n/5q2/7R/2p1Nk2/3p3P/1Q3P2/Kn5B w - - 0 1)

Ahues, Herbert Siegfried Oskar

Rochade Europa, 2001

1b1r4/4pR1n/5q2/7R/2p1Nk2/3p3P/1Q3P2/Kn5B

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Rh4#
      • 2.Rhxf5#
      • 2.Rfxf5#
    • 1...Rd6
      • 2.Qe5#
    • 1...Be5
      • 2.Qxe5#
    • 1...Ba7
      • 2.Qe5#
    • 1...Sc3
      • 2.Qd2#
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Rxd6
        • 2.Qe5#
      • 1...Bxd6
        • 2.Qd4#
      • 1...exd6
        • 2.Qd4#
      • 1...Qf5
        • 2.Rhxf5#
        • 2.Rfxf5#
        • 2.Qd4#
      • 1...Ba7
        • 2.Qe5#
      • 1...Sd2
        • 2.Qe5#
      • 1...Sc3
        • 2.Qd2#
      • 1...Sg5
        • 2.Rh4#
      • 1...c3
        • 2.Qb4#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(i);S_CUTB(h)::QAB1(C)
    • B(h);N_GUARD::QAB1(C),XB(h)
    • B(h);N_GUARD::QAB1(C)
    • S(a);N_PINQ(C)::QAB(C)
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • R(i);XS(F)::QAB1(C)
      • B(h);XS(F)::QAR2(C)
      • P(f);XS(F)::QAR2(C)
      • B(h);::QAB1(C)
      • S(a);::QAB1(C)
      • S(a);N_PINQ(C)::QAB(C)
      • S(g);SBLOCK::R(G)
      • P(c);N_PINQ(C)::QAR(C)
      • P(f);N_PINQ(C)::QAB1(C),XP(f)
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