MESON Chess Problem Database

Problem Display
PID: 111163 (8/6Q1/1p4P1/1K6/2p1k1B1/4N3/4P3/4B3 w - - 0 1)

Shedey, Sergey Oleksandrovich

Hlas l'udu, 1970

8/6Q1/1p4P1/1K6/2p1k1B1/4N3/4P3/4B3

#2

7 + 3

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe3
      • 2.Qe5#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qd4#
      • 1...Kd5
        • 2.Qd4#
      • 1...Kf4!
    • 1.Sxc4?
      • threat
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Kf4!
    • 1.Bf3+?
      • 1...Kxe3
        • 2.Qe5#
      • 1...Kf4!
    • 1.Bf5+?
      • 1...Kxe3
        • 2.Qe5#
      • 1...Kf4!
    • 1.Qf6?
      • 1...Kxe3
        • 2.Qe5#
      • 1...c3!
    • 1.Qc7?
      • 1...Kxe3
        • 2.Qe5#
      • 1...Kd4
        • 2.Qf4#
      • 1...c3!
  • Keys
    • 1.Bc3!
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kxe3
        • 2.Qd4#
      • 1...Kf4
        • 2.Qe5#

This anticipates 39342(1997)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,XS(C)::QAR2(G)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(G)
      • Vars
        • K(b);S_FLIGHT::QAR1(G)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(C);XP(a)
      • Threat
        • QAR1(G)
      • Vars
        • K(b);S_FLIGHT::QAR1(G)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAR2(G)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAR2(G)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAR2(G)
      • Refutation
        • P(a);
    • Try
      • Q(G);
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAR2(G)
        • K(b);P-FLIGHT::QAR2(G)
      • Refutation
        • P(a);
  • Actual
    • B(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P-FLIGHT,XS(C)::QAB1(G)
      • K(b);P-FLIGHT::QAB1(G)
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