MESON Chess Problem Database

Problem Display
PID: 51772 (8/2rPBK2/8/p2NNp2/n1Pk4/Q2pp3/p1b2nB1/2R1R3 w - - 0 1)

Popovski, Aleksandr

StrateGems, 2004

8/2rPBK2/8/p2NNp2/n1Pk4/Q2pp3/p1b2nB1/2R1R3

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Bf6#
    • 1...Sb2
      • 2.Qxb2#
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sc5
      • 2.Qb2#
      • 2.Qc3#
    • 1...Sb6
      • 2.Qb2#
      • 2.Qc3#
    • 1...d2
      • 2.Qxe3#
  • Tries
    • 1.Sf3+?
      • 1...Ke4
        • 2.Rxe3#
      • 1...Kxc4!
    • 1.Sc6+?
      • 1...Kxc4
        • 2.Qxa4#
      • 1...Rxc6!
    • 1.Qb2+?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sxb2!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Sxf5#
      • 1...Kxe5
        • 2.Qd6#
      • 1...Se4
        • 2.Sf3#
      • 1...d2
        • 2.Sxc2#
      • 1...f4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(g);OGATEB,P_SPINP(e),S_FLIGHT,XS(G)::B(I)
    • S(f);N_GUARD::QAB1(D),XS(f)
    • P(d);OGATE::QAB1(D),XP(e)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINP(e)::R1(B),XP(e)
      • Refutation
        • K(g);P-FLIGHT,P_SPINB(b),XP(E)
    • Try
      • S(G);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINB(b),XP(E)::QAR2(D),XS(f)
      • Refutation
        • R(j);XS(G)
    • Try
      • Q(D);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAB1(D),XS(f)
      • Refutation
        • S(f);XQ(D)
  • Actual
    • S(F);XP(e)
    • Threat
      • S(F),XP(i)
    • Vars
      • K(g);S_FLIGHT,XS(G)::QAB1(D)
      • S(c);SBLOCK::S(G)
      • P(d);N_GUARD::S(F),XB(b)
      • P(i);::S(F)
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