MESON Chess Problem Database

Problem Display
PID: 79787 (K3R3/1PpBn2p/N2b4/1rBk1p2/1p3pNq/n2Pp3/7Q/3b4 w - - 0 1)

Pituk, Alexander

Magyar Hirlap, 1928

K3R3/1PpBn2p/N2b4/1rBk1p2/1p3pNq/n2Pp3/7Q/3b4

#2

9 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Be6#
    • 1...f3
      • 2.Sxe3#
  • Tries
    • 1.Sxe3+?
      • 1...Ke5
        • 2.Qb2#
      • 1...fxe3!
    • 1.Sf6+?
      • 1...Ke5
        • 2.Qb2#
      • 1...Qxf6!
    • 1.Qg2+?
      • 1...Bf3
        • 2.Qxf3#
      • 1...f3!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qd4#
      • 1...Rxc5
        • 2.Sxb4#
      • 1...Bxc5
        • 2.Qe5#
      • 1...Qf6
        • 2.Sxf6#
      • 1...Be5
        • 2.Qxe5#
      • 1...Sc2
        • 2.Qb3#
      • 1...Sc6
        • 2.Be6#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(l);SBLOCK::B(G)
    • P(e);N_GUARD::S(C),XP(c)
  • Tries
    • Try
      • S(C);CHECK,XP(c)
      • Vars
        • K(h);P-FLIGHT,P_SPINP(e),P_SPINS(l)::QAB(A)
      • Refutation
        • P(e);XS(C)
    • Try
      • S(C);CHECK
      • Vars
        • K(h);P-FLIGHT,P_SPINP(e),P_SPINS(l)::QAB(A)
      • Refutation
        • Q(f);XS(C)
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB(A),XB(a)
      • Refutation
        • P(e);P_SPINP(e)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • R(g);N_GUARD,SBLOCK,XB(D)::S(E),XP(d)
      • B(j);N_GUARD,XB(D)::QAR1(A)
      • Q(f);N_GUARD::S(C),XQ(f)
      • B(j);N_GUARD::QAR1(A),XB(j)
      • S(b);N_GUARD,S_CUTB(a)::QAB(A)
      • S(l);SBLOCK::B(G)
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