MESON Chess Problem Database

Problem Display
PID: 89163 (1B4nq/1n5p/N1p5/Rrrk4/3P4/4QN1K/b1P5/4bB2 w - - 0 1)

Seilberger, Johann Joseph Petrus Adrianus

American Chess Problemist, 1949

1B4nq/1n5p/N1p5/Rrrk4/3P4/4QN1K/b1P5/4bB2

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Qxe5#
    • 1...Rb3
      • 2.c4#
    • 1...Rc3
      • 2.Sb4#
    • 1...Sd6
      • 2.Sc7#
    • 1...Sf6
      • 2.Qe5#
  • Tries
    • 1.Bd3?
      • threat
        • 2.Qe4#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sf6
        • 2.Qe5#
      • 1...Qxd4!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Qe4#
      • 1...Qxd4
        • 2.Qe6#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Rb3
        • 2.c4#
      • 1...Rc3
        • 2.Sb4#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sf6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(j);N_GUARD::QAR1(C),XQ(j)
    • R(c);P_SPINR(d),S_CUTB(b)::P(B)
    • R(d);P_SPINR(c),S_CUTB(a)::S(H)
    • S(g);SBLOCK::S(H)
    • S(i);S_CUTQ(j)::QAR1(C)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAB1(C)
      • Vars
        • Q(j);N_GUARD::QAR1(C),XQ(j)
        • S(g);SBLOCK::S(H)
        • S(i);S_CUTQ(j)::QAR1(C)
      • Refutation
        • Q(j);XP(F)
  • Actual
    • S(D);
    • Threat
      • QAB1(C)
    • Vars
      • Q(j);SBLOCK,XP(F)::QAB1(C)
      • Q(j);N_GUARD::QAR1(C),XQ(j)
      • R(c);P_PINQ(C),P_SPINR(d),S_CUTB(b)::P(B)
      • R(d);P_PINQ(C),P_SPINR(c),S_CUTB(a)::S(H)
      • S(g);SBLOCK::S(H)
      • S(i);S_CUTQ(j)::QAR1(C)
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Developed and maintained by Brian Stephenson.
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