MESON Chess Problem Database

Problem Display
PID: 206675 (n5n1/4PQ2/2p5/NPkNR2P/5P2/K7/1B2p3/8 w - - 0 1)

Krenosz, Ferenc

Ujsag, 1925

n5n1/4PQ2/2p5/NPkNR2P/5P2/K7/1B2p3/8

#2

10 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3+?
      • 1...Kc4
        • 2.Sb4#
      • 1...Kd6
        • 2.Qe6#
        • 2.e8S#
      • 1...Kxb5!
    • 1.Sb7+?
      • 1...Kc4
        • 2.Sb4#
      • 1...Kxb5!
    • 1.Sc3+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Kd6
        • 2.e8S#
      • 1...Kb6!
    • 1.Se3+?
      • 1...Kd6
        • 2.e8S#
      • 1...Kb6!
    • 1.Sb4+?
      • 1...Kd6
        • 2.e8S#
      • 1...Kb6!
    • 1.Sb6+?
      • 1...Kd6
        • 2.e8S#
      • 1...Kxb6!
    • 1.Sf6+?
      • 1...Kd6
        • 2.e8S#
      • 1...Kb6!
    • 1.Sc7+?
      • 1...Kd6
        • 2.e8S#
      • 1...Kb6!
    • 1.Bd4+?
      • 1...Kxb5
        • 2.Sc7#
      • 1...Kd6
        • 2.Qe6#
        • 2.e8S#
      • 1...Kxd4!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sde3#
        • 2.Sb4#
        • 2.Sdb6#
        • 2.Sf6#
        • 2.Sc7#
      • 1...Kxc4
        • 2.Sb4#
      • 1...Kxb5
        • 2.Sc7#
      • 1...Sxe7
        • 2.Sxe7#
      • 1...cxb5
        • 2.Sb4#
      • 1...cxd5
        • 2.Qxd5#
      • 1...e1Q
        • 2.Sde3#
      • 1...e1R
        • 2.Sde3#
      • 1...Sb6
        • 2.Sdxb6#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Sf6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB(J)+S(F)
      • Refutation
        • K(b);P-FLIGHT,XP(E)
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB(J)+S(F)
      • Refutation
        • K(b);P-FLIGHT,XP(E)
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(J)
        • K(b);S_FLIGHT::P=S
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::P=S
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::P=S
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::P=S
      • Refutation
        • K(b);S_FLIGHT,XS(F)
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::P=S
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::P=S
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(A);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(E)::R(G)+S(F),DCHECK
      • Refutation
        • K(b);S_FLIGHT,XB(A)
  • Actual
    • S(D);
    • Threat
      • DUALS(5)
    • Vars
      • K(b);P-FLIGHT,XS(D)::QAB(J)+S(F)
      • K(b);P-FLIGHT,XP(E)::R(G)+S(F),DCHECK
      • S(e);XP(I)::R(G)+S(F),XS(e)
      • P(c);SBLOCK,XP(E)::R(G)+S(F)
      • P(c);OGATE,P_SPINP(c),XS(F)::QAR1(J),XP(c)
      • P(a);::R(G)+S(F)
      • S(d);::R(G)+S(F),XS(d)
      • S(e);::R(G)+S(F),XS(e)
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