MESON Chess Problem Database

Problem Display
PID: 88904 (8/8/8/Np6/p3pN2/1p1p4/nBPk1P2/1Q3K2 w - - 0 1)

Moutecidis, Pavlos

Sorokin, Evgeny Pavlovich

Buletin Problemistic, 1970

8/8/8/Np6/p3pN2/1p1p4/nBPk1P2/1Q3K2

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qxc1#
    • 1...Sc3
      • 2.Qc1#
    • 1...Sb4
      • 2.Qc1#
    • 1...bxc2
      • 2.Qe1#
    • 1...dxc2
      • 2.Qe1#
    • 1...a3
      • 2.Sxb3#
    • 1...b4
      • 2.Sc4#
  • Tries
    • 1.cxb3?
      • 1...axb3
        • 2.Sxb3#
      • 1...Sc1
        • 2.Qxc1#
      • 1...e3
        • 2.Qxd3#
      • 1...Sc3
        • 2.Qc1#
      • 1...Sb4
        • 2.Qc1#
      • 1...b4
        • 2.Sc4#
      • 1...a3!
    • 1.cxd3?
      • 1...exd3
        • 2.Qxd3#
      • 1...Sc1
        • 2.Qxc1#
      • 1...Sc3
        • 2.Qc1#
      • 1...Sb4
        • 2.Qc1#
      • 1...a3
        • 2.Sxb3#
      • 1...b4
        • 2.Sc4#
      • 1...e3!
    • 1.c4?
      • 1...bxc4
        • 2.Sxc4#
      • 1...Sc1
        • 2.Qxc1#
      • 1...e3
        • 2.Qxd3#
      • 1...Sc3
        • 2.Qc1#
      • 1...Sb4
        • 2.Qc1#
      • 1...a3
        • 2.Sxb3#
      • 1...b4!
  • Keys
    • 1.c3!
      • 1...Sxc3
        • 2.Qc1#
      • 1...Sc1
        • 2.Qxc1#
      • 1...e3
        • 2.Qxd3#
      • 1...Sb4
        • 2.Qc1#
      • 1...a3
        • 2.Sxb3#
      • 1...b4
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAB1(A),XS(a)
    • S(a);N_GUARD::QAB1(A)
    • P(c);SBLOCK,XP(D)::QAB1(A)
    • P(d);SBLOCK,XP(D)::QAB1(A)
    • P(e);N_GUARD::S(G),XP(c)
    • P(g);N_GUARD::S(G)
  • Tries
    • Try
      • P(D);XP(c)
      • Vars
        • P(e);XP(D)::S(G),XP(e)
        • S(a);N_GUARD::QAB1(A),XS(a)
        • P(f);N_GUARD::QAR1(A),XP(d)
        • S(a);N_GUARD::QAB1(A)
        • P(g);N_GUARD::S(G)
      • Refutation
        • P(e);
    • Try
      • P(D);XP(d)
      • Vars
        • P(f);OGATE,XP(D)::QAR1(A),XP(f)
        • S(a);N_GUARD::QAB1(A),XS(a)
        • S(a);N_GUARD::QAB1(A)
        • P(e);N_GUARD::S(G),XP(c)
        • P(g);N_GUARD::S(G)
      • Refutation
        • P(f);
    • Try
      • P(D);
      • Vars
        • P(g);XP(D)::S(G),XP(g)
        • S(a);N_GUARD::QAB1(A),XS(a)
        • P(f);N_GUARD::QAR1(A),XP(d)
        • S(a);N_GUARD::QAB1(A)
        • P(e);N_GUARD::S(G),XP(c)
      • Refutation
        • P(g);
  • Actual
    • P(D);
    • Vars
      • S(a);N_GUARD,XP(D)::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • P(f);N_GUARD::QAR1(A),XP(d)
      • S(a);N_GUARD::QAB1(A)
      • P(e);N_GUARD::S(G),XP(c)
      • P(g);N_GUARD::S(G)
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