MESON Chess Problem Database

Problem Display
PID: 230981 (8/8/6R1/1N6/1k6/1b1Q4/1K6/8 w - - 0 1)

Lukashev, Viktor Sergeevich

Magadan-60 JT (Kudesnik), 1999

(First published on Wed Mar 10 1999)

8/8/6R1/1N6/1k6/1b1Q4/1K6/8

#2

4 + 2

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sa3?
      • threat
        • 2.Qb5#
      • 1...Ka4
        • 2.Qb5#
      • 1...Ka5
        • 2.Qb5#
      • 1...Kc5
        • 2.Qd6#
      • 1...Ba4
        • 2.Qc3#
      • 1...Bc4!
    • 1.Sd4?
      • threat
        • 2.Qb5#
      • 1...Ka4
        • 2.Qb5#
      • 1...Ka5
        • 2.Qb5#
      • 1...Ba4
        • 2.Qc3#
      • 1...Bc4
        • 2.Qa3#
      • 1...Kc5!
    • 1.Sd6?
      • threat
        • 2.Qb5#
      • 1...Ka4
        • 2.Qb5#
      • 1...Ka5
        • 2.Qb5#
      • 1...Ba4
        • 2.Qc3#
      • 1...Bc4
        • 2.Qa3#
      • 1...Kc5!
    • 1.Sa7?
      • threat
        • 2.Qb5#
      • 1...Ka4
        • 2.Qb5#
      • 1...Ka5
        • 2.Qb5#
      • 1...Ba4
        • 2.Qc3#
      • 1...Bc4
        • 2.Qa3#
      • 1...Kc5!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Qb5#
      • 1...Ka4
        • 2.Qb5#
      • 1...Ka5
        • 2.Qb5#
      • 1...Kc5
        • 2.Sa6#
      • 1...Ba4
        • 2.Qc3#
      • 1...Bc4
        • 2.Qa3#

This anticipates 52232(2004), 92747(2004)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • K(b);S_FLIGHT::QAR1(B)
        • K(b);S_FLIGHT::QAB1(B)
        • B(a);SBLOCK::QAB1(B)
      • Refutation
        • B(a);
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • K(b);S_FLIGHT::QAR1(B)
        • B(a);SBLOCK::QAB1(B)
        • B(a);OGATE,SBLOCK::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • K(b);S_FLIGHT::QAR1(B)
        • B(a);SBLOCK::QAB1(B)
        • B(a);OGATE::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • K(b);S_FLIGHT::QAR1(B)
        • B(a);SBLOCK::QAB1(B)
        • B(a);OGATE,SBLOCK::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAR1(B)
    • Vars
      • K(b);P-FLIGHT::QAB1(B)
      • K(b);S_FLIGHT::QAR1(B)
      • K(b);S_FLIGHT::S(C)
      • B(a);SBLOCK::QAB1(B)
      • B(a);OGATE,SBLOCK::QAB1(B)
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