MESON Chess Problem Database

Problem Display
PID: 160948 (3K4/p3N3/1n1k4/2pPpP2/8/4PP2/5Q1P/1R2B3 w - - 0 1)

Agarkov, Anatoly Yakovlevich

Source?, 1981

3K4/p3N3/1n1k4/2pPpP2/8/4PP2/5Q1P/1R2B3

#2

10 + 5

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Bb4#
    • 1...e4
      • 2.Qg3#
    • 1...a5
      • 2.Rxb6#
    • 1...a6
      • 2.Rxb6#
  • Tries
    • 1.Qa2?
      • 1...Sxd5
        • 2.Qxd5#
      • 1...c4
        • 2.Bb4#
        • 2.Qa3#
      • 1...e4
        • 2.Bg3#
      • 1...Sa4
        • 2.Sc8#
      • 1...Sd7
        • 2.Sc8#
      • 1...Sa8
        • 2.Sc8#
      • 1...Sc8
        • 2.Sxc8#
      • 1...a5
        • 2.Rxb6#
      • 1...a6
        • 2.Rxb6#
      • 1...Sc4!
    • 1.e4?
      • 1...Sa4
        • 2.Sc8#
      • 1...Sc4
        • 2.Sc8#
      • 1...Sd7
        • 2.Sc8#
      • 1...Sa8
        • 2.Sc8#
      • 1...Sc8
        • 2.Sxc8#
      • 1...c4
        • 2.Bb4#
      • 1...a5
        • 2.Rxb6#
      • 1...a6
        • 2.Rxb6#
      • 1...Sxd5!
  • Keys
    • 1.Qd2!
      • 1...Sxd5
        • 2.Qxd5#
      • 1...c4
        • 2.Qb4#
      • 1...e4
        • 2.Bg3#
      • 1...Sa4
        • 2.Sc8#
      • 1...Sc4
        • 2.Sc8#
      • 1...Sd7
        • 2.Sc8#
      • 1...Sa8
        • 2.Sc8#
      • 1...Sc8
        • 2.Sxc8#
      • 1...a5
        • 2.Rxb6#
      • 1...a6
        • 2.Rxb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::B(B)
    • P(b);OGATEB::QAB(C)
    • P(e);N_GUARD::R(A),XS(c)
  • Tries
    • Try
      • Q(C);
      • Vars
        • S(c);OGATE,XP(G)::QAR1(C),XS(c)
        • P(b);OGATEB::B(B)
        • S(c);N_GUARD::S(I)
        • S(c);N_GUARD::S(I),XS(c)
        • P(e);N_GUARD::R(A),XS(c)
      • Refutation
        • S(c);
    • Try
      • P(E);
      • Vars
        • S(c);N_GUARD::S(I)
        • S(c);N_GUARD::S(I),XS(c)
        • P(a);OGATEB::B(B)
        • P(e);N_GUARD::R(A),XS(c)
      • Refutation
        • S(c);XP(G)
  • Actual
    • Q(C);
    • Vars
      • S(c);OGATE,P_SPINS(c),XP(G)::QAR1(C),XS(c)
      • P(a);OGATEB::QAB(C)
      • P(b);OGATEB::B(B)
      • S(c);N_GUARD::S(I)
      • S(c);N_GUARD::S(I),XS(c)
      • P(e);N_GUARD::R(A),XS(c)
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