MESON Chess Problem Database

Problem Display
PID: 190413 (1N4Q1/1rn5/qP5r/1PkNP2p/p1p5/2B3pb/1R6/R3K3 w Q - 0 1)

Mira-Kraft, Edwin

Heilbronner Stimme, 2001

(First published on Sat May 5 2001)

1N4Q1/1rn5/qP5r/1PkNP2p/p1p5/2B3pb/1R6/R3K3

#2

10 + 10

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Sd7#
    • 1...Bg2
      • 2.Sd7#
    • 1...Bd7
      • 2.Sxd7#
    • 1...Sa8
      • 2.Sxa6#
    • 1...Se8
      • 2.Sxa6#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Bd4#
      • 1...Sxb5
        • 2.Bb4#
      • 1...Re6
        • 2.Sd7#
      • 1...Be6
        • 2.Qf8#
      • 1...Se6
        • 2.Sxa6#
      • 1...Qa5!
    • 1.Qf8+?
      • 1...Rd6
        • 2.Qxd6#
      • 1...Kxd5!
  • Keys
    • 1.0-0-0!
      • threat
        • 2.Bd4#
      • 1...Sxb5
        • 2.Bb4#
      • 1...Re6
        • 2.Sd7#
      • 1...Be6
        • 2.Qf8#
      • 1...Se6
        • 2.Sxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • B(b);N_GUARD::S(I)
    • B(b);N_GUARD::S(I),XB(b)
    • S(j);N_GUARD::S(I),XQ(g)
  • Tries
    • Try
      • R(A);
      • Threat
        • B(D)
      • Vars
        • S(j);SBLOCK,XP(E)::B(D)
        • R(h);P_PINP(G),S_CUTB(b)::S(I)
        • B(b);S_CUTR(h)::QAB(J)
        • S(j);N_GUARD::S(I),XQ(g)
      • Refutation
        • Q(g);P_PINB(D)
    • Try
      • Q(J);CHECK
      • Vars
        • R(h);N_GUARD,P_SPINR(h)::QAB1(J),XR(h)
      • Refutation
        • K(e);P-FLIGHT,XS(F)
  • Actual
    • K(B);0-0-0
    • Threat
      • B(D)
    • Vars
      • S(j);SBLOCK,XP(E)::B(D)
      • R(h);S_CUTB(b)::S(I)
      • B(b);S_CUTR(h)::QAB(J)
      • S(j);N_GUARD::S(I),XQ(g)
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