MESON Chess Problem Database

Problem Display
PID: 247403 (3R2r1/2P3bB/2pBP3/qp6/2pknN1R/8/2np3K/1b1N1Q2 w - - 0 1)

Szoghy, Jozsef

Stella Polaris, 1968

3R2r1/2P3bB/2pBP3/qp6/2pknN1R/8/2np3K/1b1N1Q2

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qd3#
  • Tries
    • 1.Se2+?
      • 1...Kd3
        • 2.Bxe4#
      • 1...Kd5!
    • 1.Qe2?
      • threat
        • 2.Qxe4#
      • 1...Sa1
        • 2.Qe3#
      • 1...Se1
        • 2.Qe3#
      • 1...Sa3
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sb4
        • 2.Qe3#
      • 1...Sf2
        • 2.Bf8#
      • 1...Sc3
        • 2.Qxd2#
      • 1...Sg3
        • 2.Bf8#
      • 1...Sc5
        • 2.Be5#
      • 1...Sg5
        • 2.Bf8#
      • 1...Sf6
        • 2.Qe5#
      • 1...Sxd6!
    • 1.Qg1+?
      • 1...Se3
        • 2.Qxe3#
      • 1...Sf2!
    • 1.Qf2+?
      • 1...Se3
        • 2.Qxe3#
      • 1...Sxf2!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qxe4#
      • 1...Sxd6
        • 2.Sd3#
      • 1...Sa1
        • 2.Qe3#
      • 1...Se1
        • 2.Qe3#
      • 1...Sa3
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sb4
        • 2.Qe3#
      • 1...Sf2
        • 2.Se2#
      • 1...Sc3
        • 2.Se2#
      • 1...Sg3
        • 2.Se2#
      • 1...Sc5
        • 2.Se2#
      • 1...Sg5
        • 2.Se2#
      • 1...Sf6
        • 2.Se2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD::QAR1(B)
  • Tries
    • Try
      • S(D);CHECK,P_PINS(f)
      • Vars
        • K(e);P-FLIGHT::B(I),XS(f)
      • Refutation
        • K(e);N_SPINS(f),P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XS(f)
      • Vars
        • S(b);N_GUARD::QAB1(B)
        • S(b);N_GUARD::QAB1(B),XS(b)
        • S(f);N_GUARD::R(J)+B(F)
        • S(f);N_GUARD,S_CUTQ(g)::QAR2(B),XP(c)
        • S(f);SBLOCK::R(J)+B(F),DCHECK
        • S(f);OGATE::QAB1(B)
      • Refutation
        • S(f);P_SPINS(f),XB(F)
    • Try
      • Q(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(B),XS(b)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • Q(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(B),XS(b)
      • Refutation
        • S(f);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XS(f)
    • Vars
      • S(f);P_SPINS(f),XB(F)::R(E)+S(D)
      • S(b);N_GUARD::QAB1(B)
      • S(b);N_GUARD::QAB1(B),XS(b)
      • S(f);::R(E)+S(D),DCHECK
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