MESON Chess Problem Database

Problem Display
PID: 86801 (8/1K6/8/N7/4Q3/pNp5/pkpb4/rn6 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Die Schwalbe, 1998

8/1K6/8/N7/4Q3/pNp5/pkpb4/rn6

#2

4 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc1?
      • threat
        • 2.Sd3#
      • 1...Bxc1
        • 2.Qb4#
      • 1...Kxc1!
    • 1.Sc5?
      • threat
        • 2.Sd3#
      • 1...c1Q
        • 2.Sc4#
        • 2.Sa4#
      • 1...c1S
        • 2.Sc4#
        • 2.Sa4#
      • 1...c1B
        • 2.Sc4#
        • 2.Sa4#
      • 1...c1R
        • 2.Sc4#
        • 2.Sa4#
      • 1...Kc1!
    • 1.Qb4?
      • threat
        • 2.Sc4#
      • 1...c1Q
        • 2.Sd4#
      • 1...c1B
        • 2.Sd4#
      • 1...c1R
        • 2.Sd4#
      • 1...c1S!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qxc2#
      • 1...Kc1
        • 2.Qxc2#
      • 1...c1Q
        • 2.Sc4#
      • 1...c1S
        • 2.Sc4#
        • 2.Qc2#
      • 1...c1B
        • 2.Sc4#
        • 2.Qc2#
      • 1...c1R
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • B(f);SBLOCK,XS(A)::QAR2(B)
      • Refutation
        • K(d);S_FLIGHT,XS(A)
    • Try
      • S(A);
      • Threat
        • S(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • S(C)
      • Vars
        • P(e);SBLOCK::QAR(B)+S(A)
      • Refutation
        • P(e);
  • Actual
    • S(A);
    • Threat
      • QAR1(B),XP(e)
    • Vars
      • K(d);S_FLIGHT::QAR1(B),XP(e)
      • P(e);SBLOCK::S(C)
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