MESON Chess Problem Database

Problem Display
PID: 90127 (8/8/B7/N1pp2K1/n1p1p3/3k2N1/p2P4/rb1Q2B1 w - - 0 1)

Surkov, Ruslan Albertovich

Die Schwalbe, 1999

8/8/B7/N1pp2K1/n1p1p3/3k2N1/p2P4/rb1Q2B1

#2

7 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc2
      • 2.Qe2#
    • 1...d4
      • 2.Bxc4#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sc1#
        • 2.Sf4#
      • 1...Bc2
        • 2.Sf4#
      • 1...e3!
    • 1.Sb3?
      • threat
        • 2.Sc1#
      • 1...Bc2
        • 2.Qe2#
      • 1...e3!
    • 1.Be3?
      • 1...Sb2
        • 2.Qb3#
      • 1...Bc2
        • 2.Qe2#
      • 1...Sb6
        • 2.Qb3#
      • 1...d4
        • 2.Bxc4#
      • 1...Sc3!
    • 1.Qb3+?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Kxd2!
  • Keys
    • 1.Sxe4!
      • 1...Kxe4
        • 2.Qe2#
      • 1...dxe4
        • 2.Bxc4#
      • 1...Sb2
        • 2.Sxc5#
      • 1...Bc2
        • 2.Qf3#
      • 1...Sc3
        • 2.Sxc5#
      • 1...Sb6
        • 2.Sxc5#
      • 1...d4
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::QAB1(A)
    • P(i);N_GUARD::B(G),XP(f)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::S(D)
      • Refutation
        • P(g);
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • B(b);SBLOCK::QAB1(A)
      • Refutation
        • P(g);
    • Try
      • B(B);
      • Vars
        • S(e);N_GUARD::QAR2(A)
        • B(b);SBLOCK::QAB1(A)
        • P(i);N_GUARD::B(G),XP(f)
      • Refutation
        • S(e);
    • Try
      • Q(A);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAR1(A),XS(e)
      • Refutation
        • K(d);N_SPINP(f),P-FLIGHT,XP(C)
  • Actual
    • S(D);XP(g)
    • Vars
      • K(d);N_SPINP(f),S_FLIGHT,XS(D)::QAR2(A)
      • P(i);N_GUARD,SBLOCK,XS(D)::B(G),XP(f)
      • S(e);N_GUARD::S(D),XP(h)
      • B(b);SBLOCK::QAR2(A)
      • P(i);SBLOCK::S(D)
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