MESON Chess Problem Database

Problem Display
PID: 247402 (5R2/4p2B/4n3/1N2kPRp/1Q6/4N3/3K3b/7b w - - 0 1)

Szoghy, Jozsef

Stella Polaris, 1968

5R2/4p2B/4n3/1N2kPRp/1Q6/4N3/3K3b/7b

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sf4
      • 2.Qd4#
    • 1...Sc5
      • 2.Qd4#
    • 1...Sxg5
      • 2.Qd4#
    • 1...Sc7
      • 2.Qd4#
    • 1...Sg7
      • 2.Qd4#
    • 1...Sd8
      • 2.Qd4#
    • 1...Sxf8
      • 2.Qd4#
  • Tries
    • 1.Qc3+?
      • 1...Ke4
        • 2.fxe6#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Kf4!
    • 1.Qd6+?
      • 1...Ke4
        • 2.fxe6#
      • 1...exd6!
    • 1.Qb2+?
      • 1...Ke4
        • 2.fxe6#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Kf4!
    • 1.Qe4+?
      • 1...Kxe4
        • 2.fxe6#
      • 1...Bxe4!
  • Keys
    • 1.Qxe7!
      • threat
        • 2.fxe6#
      • 1...Ke4
        • 2.fxe6#
      • 1...Kf4
        • 2.fxe6#
      • 1...Be4
        • 2.Qd6#
      • 1...Bf4
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • S(e);N_GUARD::QAB1(C),XS(e)
    • S(e);N_GUARD::QAB1(C)
    • S(e);N_GUARD,XR(F)::QAB1(C)
    • S(e);N_GUARD,XR(H)::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P-FLIGHT::B(G)+P(E),XS(e)
        • S(e);N_GUARD,P_SPINS(e)::QAB1(C),XS(e)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P-FLIGHT::B(G)+P(E),XS(e)
      • Refutation
        • P(f);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P-FLIGHT::B(G)+P(E),XS(e)
        • S(e);N_GUARD,P_SPINS(e)::QAB1(C),XS(e)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P-FLIGHT,XQ(C)::B(G)+P(E),XS(e)
      • Refutation
        • B(a);XQ(C)
  • Actual
    • Q(C);P_PINS(e),XP(f)
    • Threat
      • R(F)+P(E),XS(e)
    • Vars
      • K(c);P-FLIGHT::B(G)+P(E),XS(e)
      • K(c);N_SPINS(e),S_FLIGHT::R(H)+P(E),XS(e)
      • B(a);SBLOCK::QAB1(C)
      • B(b);P_PINS(B),SBLOCK::QAR1(C),XS(e)
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