MESON Chess Problem Database

Problem Display
PID: 161885 (2b2Q2/Bn1k4/2Rn4/N4pP1/2p2K2/2P2B2/1N6/8 w - - 0 1)

Borisenka, I

Sachmatija, 2009

2b2Q2/Bn1k4/2Rn4/N4pP1/2p2K2/2P2B2/1N6/8

#2

9 + 6

5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qe8#
  • Tries
    • 1.Sa4?
      • 1...Ke6
        • 2.Qe8#
      • 1...Sxa5
        • 2.Sc5#
      • 1...Se4
        • 2.Sb6#
      • 1...Sb5
        • 2.Sb6#
      • 1...Sf7
        • 2.Sb6#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sd8
        • 2.Sc5#
      • 1...Se8!
    • 1.Bh5?
      • 1...Ke6
        • 2.Qf7#
      • 1...Sxa5
        • 2.Qxd6#
      • 1...Se4
        • 2.Qe8#
      • 1...Sb5
        • 2.Qe8#
      • 1...Se8
        • 2.Qxe8#
      • 1...Sc5
        • 2.Qxd6#
      • 1...Sd8
        • 2.Qxd6#
      • 1...Sf7!
    • 1.Rc7+?
      • 1...Ke6
        • 2.Re7#
        • 2.Qh6#
        • 2.Qe7#
        • 2.Qf6#
      • 1...Kxc7!
    • 1.Qxd6+?
      • 1...Ke8
        • 2.Bh5#
      • 1...Sxd6!
    • 1.Qf7+?
      • 1...Kd8
        • 2.Bb6#
      • 1...Sxf7!
    • 1.Qxc8+?
      • 1...Ke7
        • 2.Rc7#
      • 1...Sxc8!
  • Keys
    • 1.Bb6!
      • 1...Ke6
        • 2.Qe8#
      • 1...Sxa5
        • 2.Rxd6#
      • 1...Se4
        • 2.Qf7#
      • 1...Sb5
        • 2.Qf7#
      • 1...Sf7
        • 2.Qxf7#
      • 1...Se8
        • 2.Qf7#
      • 1...Sc5
        • 2.Rxd6#
      • 1...Sd8
        • 2.Rxd6#

Anticipated by 53288(2000)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(e);P_SPINS(c),S_FLIGHT::QAR2(I)
  • Tries
    • Try
      • S(A);
      • Vars
        • K(e);P_SPINS(c),S_FLIGHT::QAR2(I)
        • S(d);N_GUARD,XS(E)::S(A)
        • S(c);::S(A)
        • S(d);N_GUARD::S(A),XS(d)
        • S(d);N_GUARD::S(A)
      • Refutation
        • S(c);
    • Try
      • B(C);
      • Vars
        • K(e);P_SPINS(c),S_FLIGHT::QAB1(I)
        • S(d);N_GUARD,XS(E)::QAR1(I),XS(c)
        • S(c);N_GUARD::QAB1(I)
        • S(c);N_GUARD::QAB1(I),XS(c)
        • S(d);N_GUARD::QAR1(I),XS(c)
        • S(d);N_GUARD,SBLOCK::QAR1(I),XS(c)
      • Refutation
        • S(c);
    • Try
      • R(G);CHECK
      • Refutation
        • K(e);P-FLIGHT,XR(G)
    • Try
      • Q(I);CHECK,XS(c)
      • Vars
        • K(e);S_FLIGHT::B(C)
      • Refutation
        • S(d);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(e);P-FLIGHT::B(H)
      • Refutation
        • S(c);XQ(I)
    • Try
      • Q(I);CHECK,XB(f)
      • Vars
        • K(e);P-FLIGHT::R(G)
      • Refutation
        • S(c);XQ(I)
  • Actual
    • B(H);
    • Vars
      • K(e);P_SPINS(c),S_FLIGHT::QAR2(I)
      • S(d);N_GUARD,XS(E)::R1(G),XS(c)
      • S(c);N_GUARD::QAR2(I)
      • S(c);N_GUARD::QAR2(I),XS(c)
      • S(d);N_GUARD::R1(G),XS(c)
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