MESON Chess Problem Database

Problem Display
PID: 135493 (8/2N5/P1pp4/K1k5/1Nb1Qn2/1P2p3/1n1rq3/b7 w - - 0 1)

Ancin, Andrej

La Settimana Enigmistica, 1935

8/2N5/P1pp4/K1k5/1Nb1Qn2/1P2p3/1n1rq3/b7

#2

6 + 10

14649 Andrej Ancin - Chess Compositions 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qxc6#
    • 1...Sbd3
      • 2.Qxc4#
    • 1...Sd5
      • 2.Se6#
  • Tries
    • 1.Sd3+?
      • 1...Qxd3
        • 2.b4#
      • 1...Rxd3
        • 2.b4#
      • 1...Bxd3
        • 2.Qb4#
        • 2.b4#
      • 1...Sbxd3
        • 2.Qxc4#
      • 1...Sfxd3!
    • 1.Sbd5?
      • threat
        • 2.b4#
      • 1...Bxb3
        • 2.Qb4#
      • 1...Sxd5
        • 2.Se6#
      • 1...Sbd3
        • 2.Qxc4#
      • 1...Sfd3
        • 2.Se6#
      • 1...cxd5!
  • Keys
    • 1.Sc2!
      • threat
        • 2.b4#
      • 1...Bxb3
        • 2.Qb4#
      • 1...d5
        • 2.Qe7#
      • 1...Sbd3
        • 2.Qxc4#
      • 1...Sfd3
        • 2.Qd4#
      • 1...Sd5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(c);SBLOCK::QAR1(C),XP(i)
    • S(b);N_GUARD,S_CUTQ(d)::QAR1(C),XB(f)
    • S(g);N_GUARD,S_CUTB(f)::S(F)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • Q(d);XS(B)::P(A)
        • R(c);XS(B)::P(A)
        • S(b);XS(B)::QAR1(C),XB(f)
      • Refutation
        • S(g);XS(B)
    • Try
      • S(B);
      • Threat
        • P(A)
      • Vars
        • B(f);OGATE,XP(A)::QAB1(C)
        • S(g);N_GUARD,XS(B)::S(F)
        • S(b);N_GUARD,S_CUTQ(d)::QAR1(C),XB(f)
        • S(g);N_GUARD::S(F)
      • Refutation
        • P(i);XS(B)
  • Actual
    • S(B);
    • Threat
      • P(A)
    • Vars
      • B(f);OGATE,XP(A)::QAB1(C)
      • P(j);OGATEB::QAB(C)
      • S(b);N_GUARD,S_CUTQ(d)::QAR1(C),XB(f)
      • S(g);S_CUTR(c)::QAB1(C)
      • S(g);N_GUARD,S_CUTB(f)::S(F)
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