MESON Chess Problem Database

Problem Display
PID: 221428 (3r1B2/1B1p3N/4P2K/3pk3/r1PN1pb1/3Qpp1p/2PP4/6q1 w - - 0 1)

Wirtanen, Erkki Aukusti

Tidskrift for Schack, 1977

3r1B2/1B1p3N/4P2K/3pk3/r1PN1pb1/3Qpp1p/2PP4/6q1

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe6
      • 2.Sxf3#
    • 1...dxc4
      • 2.Qe4#
    • 1...dxe6
      • 2.Sc6#
    • 1...d6
      • 2.Bg7#
  • Tries
    • 1.Sxf3+?
      • 1...Kxe6
        • 2.Bxd5#
        • 2.Qg6#
        • 2.Qxd5#
      • 1...Bxf3!
    • 1.Sf5?
      • threat
        • 2.Qxd5#
      • 1...Kxe6
        • 2.Qxd5#
      • 1...dxc4
        • 2.Qe4#
        • 2.Qd5#
      • 1...dxe6
        • 2.Bg7#
      • 1...d4
        • 2.Qe4#
      • 1...Ra5!
    • 1.Sc6+?
      • 1...Kxe6
        • 2.Qg6#
        • 2.Qxd5#
      • 1...dxc6!
    • 1.Bxd5?
      • threat
        • 2.Qe4#
      • 1...Bf5
        • 2.Sxf3#
      • 1...Rxf8!
    • 1.Qf5+?
      • 1...Kxd4
        • 2.Qxf4#
        • 2.Qxd5#
      • 1...Bxf5!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Qxd5#
      • 1...Kxe6
        • 2.Qxd5#
      • 1...Bxe6
        • 2.Bd6#
      • 1...dxc4
        • 2.Qe4#
        • 2.Qd5#
      • 1...dxe6
        • 2.Bg7#
      • 1...d4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(g);N_GUARD,SBLOCK,XP(F)::S(E),XP(c)
    • P(h);N_GUARD,XP(D)::QAR1(C)
    • P(j);N_GUARD,SBLOCK,XP(F)::S(E)
    • P(j);SBLOCK::B(J)
  • Tries
    • Try
      • S(E);CHECK,XP(c)
      • Refutation
        • B(g);XS(E)
    • Try
      • S(E);
      • Threat
        • QAR1(C),XP(h)
      • Vars
        • K(i);P-FLIGHT,XP(F)::QAB1(C),XP(h)
        • P(j);SBLOCK,XP(F)::B(J)
        • P(h);N_GUARD::QAR1(C)
      • Refutation
        • R(e);
    • Try
      • S(E);CHECK
      • Refutation
        • P(j);XS(E)
    • Try
      • B(H);XP(h)
      • Threat
        • QAR1(C)
      • Vars
        • B(g);N_GUARD::S(E),XP(c)
      • Refutation
        • R(k);XB(J)
    • Try
      • Q(C);CHECK
      • Refutation
        • B(g);XQ(C)
  • Actual
    • S(E);
    • Threat
      • QAR1(C),XP(h)
    • Vars
      • K(i);P-FLIGHT,XP(F)::QAB1(C),XP(h)
      • B(g);SBLOCK,XP(F)::B(J)
      • P(j);SBLOCK,XP(F)::B(J)
      • P(h);N_GUARD::QAR1(C)
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