MESON Chess Problem Database

Problem Display
PID: 87803 (8/4K1p1/4p3/4k1n1/1N5N/7p/3Q1p2/5R1b w - - 0 1)

Sledziewski, Janusz

Problemista, 1966

8/4K1p1/4p3/4k1n1/1N5N/7p/3Q1p2/5R1b

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qd6#
    • 1...Sf3
      • 2.Qe3#
    • 1...Se4
      • 2.Sc6#
  • Tries
    • 1.Sc6+?
      • 1...Ke4
        • 2.Qd4#
      • 1...Bxc6!
    • 1.Sg6+?
      • 1...Ke4
        • 2.Qf4#
        • 2.Qd3#
      • 1...Kf5!
    • 1.Rxf2?
      • threat
        • 2.Qf4#
      • 1...Ke4
        • 2.Re2#
        • 2.Qf4#
      • 1...Be4
        • 2.Qc3#
        • 2.Qb2#
        • 2.Qd6#
      • 1...Sf3
        • 2.Re2#
        • 2.Qe3#
      • 1...Se4
        • 2.Sc6#
        • 2.Sg6#
      • 1...Bf3!
    • 1.Qxf2?
      • threat
        • 2.Qf4#
      • 1...Ke4
        • 2.Re1#
        • 2.Qf4#
      • 1...Sf3
        • 2.Qe3#
      • 1...Be4
        • 2.Qb2#
      • 1...Se4
        • 2.Sg6#
      • 1...Bf3!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Qd4#
      • 1...Ke4
        • 2.Qd4#
      • 1...Be4
        • 2.Qd6#
      • 1...Sf3
        • 2.Qe3#
      • 1...Se4
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::QAB1(B)
    • S(e);N_GUARD,S_CUTB(a)::QAR2(B)
    • S(e);SBLOCK,S_CUTB(a)::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(B)
      • Refutation
        • B(a);XS(C)
    • Try
      • S(D);CHECK
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(b)
    • Try
      • R(A);XP(b)
      • Threat
        • QAB1(B)
      • Refutation
        • B(a);
    • Try
      • Q(B);XP(b)
      • Threat
        • QAB1(B)
      • Vars
        • S(e);N_GUARD,S_CUTB(a)::QAR2(B)
        • B(a);SBLOCK::QAB(B)
        • S(e);SBLOCK::S(D)
      • Refutation
        • B(a);
  • Actual
    • R(A);
    • Threat
      • QAB1(B)
    • Vars
      • K(d);P-FLIGHT::QAR1(B)
      • B(a);SBLOCK::QAB1(B)
      • S(e);N_GUARD,S_CUTB(a)::QAR2(B)
      • S(e);SBLOCK,S_CUTB(a)::S(C)
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