MESON Chess Problem Database

Problem Display
PID: 80693 (8/2Qpp3/2bpp3/1n1kP1NR/1p6/1P2P3/3N4/3R2BK w - - 0 1)

Einat, Paz

3rd HM., StrateGems, 2008

8/2Qpp3/2bpp3/1n1kP1NR/1p6/1P2P3/3N4/3R2BK

#2

10 + 8

145 StrateGems 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5+
      • 2.Sde4#
    • 1...Kxe5+
      • 2.Sge4#
    • 1...dxe5
      • 2.e4#
  • Tries
    • 1.Sdf3+?
      • 1...Kc5
        • 2.Se4#
      • 1...Sd4!
    • 1.Sc4+?
      • 1...Kc5+
        • 2.Se4#
      • 1...Sd4!
    • 1.Qb6?
      • 1...Kxe5+
        • 2.Sge4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Bb7
        • 2.Qxb5#
      • 1...Ba8
        • 2.Qxb5#
      • 1...Sa3
        • 2.Sdf3#
        • 2.Sc4#
        • 2.Qd4#
      • 1...Sc3
        • 2.Qd4#
      • 1...Sa7
        • 2.Sdf3#
        • 2.Sc4#
        • 2.Qd4#
      • 1...Sc7
        • 2.Sdf3#
        • 2.Sc4#
        • 2.Qd4#
      • 1...dxe5!
  • Keys
    • 1.Qa5!
      • 1...Kc5+
        • 2.e4#
      • 1...Kxe5+
        • 2.Sge4#
      • 1...dxe5
        • 2.Sde4#
      • 1...Bb7
        • 2.Qxb5#
      • 1...Ba8
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);CHECK,P-FLIGHT,P_SPINB(d)::S(D)
    • K(c);CHECK,P-FLIGHT,P_SPINP(e),XP(G)::R(I)+S(H)
    • P(e);XP(G)::P(F)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);P-FLIGHT,P_PINS(D),P_SPINB(d)::S(H)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • S(D);CHECK
      • Vars
        • K(c);CHECK,P-FLIGHT,P_SPINB(d)::S(H)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(J);
      • Vars
        • K(c);CHECK,P-FLIGHT,XP(G)::R(I)+S(H)
        • S(b);N_GUARD::QAR1(J),XS(b)
        • B(d);N_GUARD::QAR2(J),XS(b)
        • S(b);N_GUARD::QAR1(J)
      • Refutation
        • P(e);XP(G)
  • Actual
    • Q(J);P_PINS(b)
    • Vars
      • K(c);CHECK,P-FLIGHT::B(B)+P(F)
      • K(c);CHECK,P-FLIGHT,XP(G)::R(I)+S(H)
      • P(e);SBLOCK,XP(G)::R(A)+S(D)
      • B(d);N_GUARD::QAR2(J),XS(b)
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