MESON Chess Problem Database

Problem Display
PID: 54758 (8/b2N4/qp1pKB2/p4P2/2kPB1R1/Q1P4r/2p5/5n2 w - - 0 1)

Kopaev, Viacheslav Georgievich

Schach, 1994

8/b2N4/qp1pKB2/p4P2/2kPB1R1/Q1P4r/2p5/5n2

#2

9 + 9

5454 Near Snap 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Kb5
      • 2.Qb3#
    • 1...Rxc3
      • 2.Qa4#
    • 1...a4
      • 2.Qb4#
  • Tries
    • 1.Se5+?
      • 1...Kb5
        • 2.Bc6#
        • 2.Qb3#
        • 2.c4#
      • 1...dxe5!
    • 1.Bd5+?
      • 1...Kb5
        • 2.Qb3#
        • 2.c4#
      • 1...Kd3!
    • 1.Qa2+?
      • 1...Kb5
        • 2.Qb3#
      • 1...Kxc3!
  • Keys
    • 1.d5!
      • threat
        • 2.Qa4#
      • 1...Kb5
        • 2.Qb3#
      • 1...Qb5
        • 2.Bxc2#
      • 1...a4
        • 2.Qb4#
      • 1...b5
        • 2.Qa2#

Anticipated by 29941(1994)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(d);S_FLIGHT::QAR2(A)
    • R(c);SBLOCK,XP(B)::QAR2(A)
    • P(e);N_GUARD::QAR1(A)
  • Tries
    • Try
      • S(I);CHECK
      • Refutation
        • P(h);XS(I)
    • Try
      • B(D);CHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR2(A)
      • Refutation
        • K(d);P-FLIGHT,XP(B)
  • Actual
    • P(C);
    • Threat
      • QAR2(A)
    • Vars
      • K(d);S_FLIGHT::QAR2(A)
      • Q(f);SBLOCK::R(E)+B(D),XP(b)
      • P(e);N_GUARD::QAR1(A)
      • P(g);SBLOCK::QAB(A)
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