MESON Chess Problem Database

Problem Display
PID: 193324 (1Q5K/8/p2P1R1p/4k3/2Pp2p1/4NP2/8/6q1 w - - 0 1)

Stanek, Tomas

Pravo lidu, 1914

1Q5K/8/p2P1R1p/4k3/2Pp2p1/4NP2/8/6q1

#2

7 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qf2
      • 2.Sxg4#
    • 1...Qh2
      • 2.Sxg4#
    • 1...Qa1
      • 2.Sxg4#
    • 1...Qb1
      • 2.Sxg4#
    • 1...Qc1
      • 2.Sxg4#
    • 1...Qd1
      • 2.Sxg4#
    • 1...Qe1
      • 2.Sxg4#
    • 1...Qf1
      • 2.Sxg4#
    • 1...Qh1
      • 2.Sxg4#
    • 1...dxe3
      • 2.Qb2#
    • 1...d3
      • 2.Qb2#
    • 1...g3
      • 2.Sg4#
  • Tries
    • 1.Kg7?
      • threat
        • 2.Qe8#
        • 2.d7#
      • 1...dxe3
        • 2.Qb2#
      • 1...d3
        • 2.Qb2#
      • 1...Qb1
        • 2.Sxg4#
        • 2.Qe8#
      • 1...gxf3+!
    • 1.Sd5?
      • threat
        • 2.Qe8#
        • 2.d7#
      • 1...gxf3
        • 2.Qe8#
      • 1...Qb1
        • 2.Qe8#
      • 1...d3!
    • 1.Qb5+?
      • 1...Kxf6
        • 2.Qf5#
      • 1...axb5!
    • 1.Qb7?
      • threat
        • 2.Qe7#
      • 1...dxe3
        • 2.Qb2#
      • 1...d3
        • 2.Qb2#
      • 1...Kxf6!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qf5#
      • 1...Kxf6
        • 2.Qf5#
      • 1...Qxb1
        • 2.Sxg4#
      • 1...dxe3
        • 2.Qb2#
      • 1...d3
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::S(A),XP(c)
    • P(b);OGATEB,XS(A)::QAB(F)
    • P(b);OGATEB::QAB(F)
    • P(c);S_CUTQ(a)::S(A)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATEB,XS(A)::QAB(F)
        • P(b);OGATEB::QAB(F)
      • Refutation
        • P(c);CHECK,XP(B)
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XP(B)::QAR(F)
        • Q(a);::QAR(F)
      • Refutation
        • P(b);
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT,XR(E)::QAR1(F)
      • Refutation
        • P(e);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAR2(F)
      • Vars
        • P(b);OGATEB,XS(A)::QAB(F)
        • P(b);OGATEB::QAB(F)
      • Refutation
        • K(d);S_FLIGHT,XR(E)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(d);S_FLIGHT,XR(E)::QAR1(F)
      • Q(a);N_GUARD,XQ(F)::S(A),XP(c)
      • P(b);OGATEB,XS(A)::QAB(F)
      • P(b);OGATEB::QAB(F)
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