MESON Chess Problem Database

Problem Display
PID: 54757 (1QRK4/P1B1P2p/2NPN3/3PP3/P1kp2Rr/3p4/6q1/3n3B w - - 0 1)

Kopaev, Viacheslav Georgievich

Suomen Shakki, 1996

1QRK4/P1B1P2p/2NPN3/3PP3/P1kp2Rr/3p4/6q1/3n3B

#2

14 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Qb4#
    • 1...Qh3
      • 2.Qb4#
    • 1...Qxd5
      • 2.Qb4#
    • 1...Qg1
      • 2.Qb4#
    • 1...Qa2
      • 2.Qb4#
    • 1...Qc2
      • 2.Qb4#
    • 1...Qe2
      • 2.Qb4#
    • 1...Qf2
      • 2.Qb4#
    • 1...Qh2
      • 2.Qb4#
    • 1...Qg3
      • 2.Qb4#
    • 1...Qxg4
      • 2.Qb4#
  • Tries
    • 1.Ba5?
      • threat
        • 2.Qb5#
      • 1...Kxd5
        • 2.Qb3#
      • 1...Qxd5
        • 2.Qb4#
      • 1...Qb2
        • 2.Scxd4#
      • 1...Sc3!
  • Keys
    • 1.Scxd4!
      • threat
        • 2.Qb3#
      • 1...Kc3
        • 2.Ba5#
      • 1...Kxd5
        • 2.Qb5#
      • 1...Qa2
        • 2.Ba5#
      • 1...Qb2
        • 2.Ba5#
      • 1...Qc2
        • 2.Ba5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(b);::QAR1(L)
    • Q(b);P_PINP(G),XP(D)::QAR1(L)
    • Q(b);N_SPINP(e),XR(C)::QAR1(L)
  • Tries
    • Try
      • B(J);
      • Threat
        • QAB1(L)
      • Vars
        • K(d);N_SPINP(e),P_SPINQ(b),S_FLIGHT,XP(D)::QAB(L)
        • Q(b);P_PINP(G),XP(D)::QAR1(L)
        • Q(b);::R(M)+S(F),XP(e)
      • Refutation
        • S(a);
  • Actual
    • S(F);XP(e)
    • Threat
      • QAB1(L)
    • Vars
      • K(d);P-FLIGHT::R(M)+B(J),DCHECK
      • K(d);P_SPINQ(b),S_FLIGHT,XP(D)::QAR2(L)
      • Q(b);::R(M)+B(J)
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