MESON Chess Problem Database

Problem Display
PID: 225691 (b6B/1Q1P4/5NK1/8/2PP2B1/1P1k1pP1/R5pp/3N2qr w - - 0 1)

Pituk, Alexander

Praca, 1947

b6B/1Q1P4/5NK1/8/2PP2B1/1P1k1pP1/R5pp/3N2qr

#2

12 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Se4?
      • threat
        • 2.Sc5#
        • 2.Rd2#
      • 1...Qxd4
        • 2.Rd2#
      • 1...Bxb7
        • 2.Sc5#
      • 1...Qf2
        • 2.Sexf2#
        • 2.Sc5#
      • 1...Qe3
        • 2.Sc5#
      • 1...Qe1
        • 2.Sc5#
      • 1...Qxd1!
    • 1.Qxf3+?
      • 1...Kxd4
        • 2.Se4#
      • 1...Qe3
        • 2.Qxe3#
      • 1...Bxf3!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sb4#
        • 2.Sf4#
        • 2.Bf5#
      • 1...Ke4
        • 2.Bf5#
      • 1...Qxd4
        • 2.Sb4#
      • 1...Qxd1
        • 2.Bf5#
      • 1...Bxb7
        • 2.Bf5#
      • 1...Qe3
        • 2.Sb4#
      • 1...Qe1
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);XP(F)::R1(B)
        • B(g);XQ(J)::S(H)
        • Q(a);::S(H)
      • Refutation
        • Q(a);XS(A)
    • Try
      • Q(J);CHECK,XP(f)
      • Vars
        • K(e);P-FLIGHT,XP(F)::B(L)+S(H)
        • Q(a);N_GUARD,P_SPINQ(a)::QAR1(J),XQ(a)
      • Refutation
        • B(g);XQ(J)
  • Actual
    • S(H);
    • Threat
      • DUALS(3)
    • Vars
      • K(e);S_FLIGHT::B(G)
      • Q(a);XP(F)::S(H)
      • Q(a);XS(A)::B(G)
      • B(g);XQ(J)::B(G)
      • Q(a);::S(H)
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