MESON Chess Problem Database

Problem Display
PID: 67734 (8/3pNK2/1P1pPn2/Q3pB2/2pk4/1b4NR/3P1r2/2n1b1B1 w - - 0 1)

Bourd, Evgeny

4th HM., StrateGems, 2006

8/3pNK2/1P1pPn2/Q3pB2/2pk4/1b4NR/3P1r2/2n1b1B1

#2

10 + 10

145 StrateGems 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Se2#
    • 1...Se2
      • 2.Sxe2#
    • 1...Sd3
      • 2.Se2#
    • 1...Se4
      • 2.Qd5#
    • 1...Sg4
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sh5
      • 2.Qd5#
    • 1...Sh7
      • 2.Qd5#
    • 1...Se8
      • 2.Qd5#
    • 1...Sg8
      • 2.Qd5#
    • 1...c3
      • 2.Qxc3#
    • 1...dxe6
      • 2.Sc6#
  • Tries
    • 1.Kxf6?
      • threat
        • 2.Qd5#
      • 1...dxe6
        • 2.Sc6#
      • 1...c3
        • 2.Qxc3#
      • 1...d5
        • 2.Qxd5#
      • 1...Bxd2!
    • 1.Bb1?
      • threat
        • 2.Sgf5#
        • 2.Sef5#
      • 1...dxe6
        • 2.Sc6#
      • 1...c3
        • 2.Qxc3#
      • 1...Sd3
        • 2.Sef5#
      • 1...Bc2!
    • 1.Bc2?
      • threat
        • 2.Sgf5#
        • 2.Sef5#
      • 1...dxe6
        • 2.Sc6#
      • 1...c3
        • 2.Qxc3#
      • 1...Sd3
        • 2.Sef5#
      • 1...Bxc2!
    • 1.Bd3?
      • threat
        • 2.Sgf5#
      • 1...Kxd3
        • 2.Qc3#
      • 1...Sxd3
        • 2.Sef5#
      • 1...cxd3
        • 2.Qc3#
      • 1...dxe6!
    • 1.Rh4+?
      • 1...Se4
        • 2.Qd5#
      • 1...Sg4
        • 2.Qd5#
      • 1...e4!
    • 1.Qa1+?
      • 1...c3
        • 2.Qxc3#
      • 1...Kc5!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sef5#
      • 1...Sxe4+
        • 2.Sgf5#
      • 1...dxe6
        • 2.Sc6#
      • 1...c3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • S(a);N_GUARD::S(C)
    • S(a);N_GUARD::S(C),XS(a)
    • S(i);N_GUARD,P_PINB(F)::QAR1(E)
    • S(i);N_GUARD,P_PINB(F)::QAR1(E),XS(i)
    • P(e);P_PINP(H)::QAB1(E),XP(e)
    • P(j);N_GUARD,XP(H)::S(I)
  • Tries
    • Try
      • K(J);P-FLIGHT,P_SPINB(F),XS(i)
      • Threat
        • QAR1(E)
      • Vars
        • P(j);N_GUARD,XP(H)::S(I)
        • P(e);::QAB1(E),XP(e)
        • P(h);::QAR1(E),XP(h)
      • Refutation
        • B(b);XP(B)
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(j);N_GUARD,XP(H)::S(I)
        • P(e);P_PINP(H)::QAB1(E),XP(e)
        • S(a);::S(I)
      • Refutation
        • B(d);
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(j);N_GUARD,XP(H)::S(I)
        • P(e);P_PINP(H)::QAB1(E),XP(e)
        • S(a);::S(I)
      • Refutation
        • B(d);XB(F)
    • Try
      • B(F);
      • Threat
        • S(C)
      • Vars
        • K(f);N_SPINR(c),P-FLIGHT,XB(F)::QAR1(E)
        • S(a);SBLOCK,XB(F)::S(I)
        • P(e);P_PINP(H),XB(F)::QAB1(E)
      • Refutation
        • P(j);XP(H)
    • Try
      • R(D);CHECK
      • Vars
        • S(i);P_PINB(F),P_SPINS(i)::QAR1(E)
      • Refutation
        • P(g);P_SPINP(g)
    • Try
      • Q(E);CHECK
      • Vars
        • P(e);P_PINP(H),P_SPINP(e)::QAB1(E),XP(e)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • B(F);
    • Threat
      • S(I)
    • Vars
      • S(i);CHECK,SBLOCK,XB(F)::S(C)
      • P(j);N_GUARD,XP(H)::S(I)
      • P(e);P_PINP(H)::QAB1(E),XP(e)
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