MESON Chess Problem Database

Problem Display
PID: 68181 (4Q3/8/7q/1p1RBR2/2p1B1p1/b1N1k1P1/6P1/1KN5 w - - 0 1)

Popov, Valery

1st Prize, Baturin MT, 1990

4Q3/8/7q/1p1RBR2/2p1B1p1/b1N1k1P1/6P1/1KN5

#2

10 + 6

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Bf4+?
      • 1...Qxf4
        • 2.Sd1#
      • 1...Kf2!
    • 1.Bd6?
      • threat
        • 2.Sd1#
      • 1...Bxc1
        • 2.Bc5#
      • 1...Qh1
        • 2.Bc2#
      • 1...Qe6!
    • 1.Bf6?
      • threat
        • 2.Sd1#
      • 1...Bxc1
        • 2.Bc2#
      • 1...Qh1
        • 2.Bg5#
      • 1...Be7!
    • 1.Rd4?
      • threat
        • 2.Sd1#
        • 2.Sd5#
      • 1...Qf4
        • 2.Sd1#
      • 1...Qh1
        • 2.Sd5#
      • 1...Qc6
        • 2.Sd1#
      • 1...Qd6
        • 2.Sd1#
      • 1...Qe6
        • 2.Sd1#
      • 1...Bxc1!
    • 1.Rf2?
      • threat
        • 2.Bd4#
        • 2.Re2#
      • 1...Qg7
        • 2.Re2#
      • 1...Qb6
        • 2.Re2#
      • 1...Qf6
        • 2.Re2#
      • 1...Qh8
        • 2.Re2#
      • 1...Bc5
        • 2.Re2#
      • 1...Kxf2!
  • Keys
    • 1.Bc2!
      • threat
        • 2.Sd1#
      • 1...Bxc1
        • 2.Bf6#
      • 1...Qh1
        • 2.Bd6#

This anticipates 146674(1993)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(H);CHECK
      • Vars
        • Q(f);XB(H)::S(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(H);
      • Threat
        • S(D)
      • Vars
        • B(a);N_GUARD,XS(B)::B(H)
        • Q(f);N_GUARD,P_PINS(B)::QAR(J)+B(F)
      • Refutation
        • Q(f);
    • Try
      • B(H);
      • Threat
        • S(D)
      • Vars
        • B(a);N_GUARD,XS(B)::QAR(J)+B(F)
        • Q(f);N_GUARD,P_PINS(B)::B(H)
      • Refutation
        • B(a);
    • Try
      • R(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);::S(D)
        • Q(f);P_PINS(B)::S(D)
      • Refutation
        • B(a);XS(B)
    • Try
      • R(I);
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);::R1(I)
        • B(a);::R1(I)
      • Refutation
        • K(b);S_FLIGHT,XR(I)
  • Actual
    • B(F);
    • Threat
      • S(D)
    • Vars
      • B(a);N_GUARD,XS(B)::QAR(J)+B(H)
      • Q(f);N_GUARD,P_PINS(B)::QAR(J)+B(H)
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