MESON Chess Problem Database

Problem Display
PID: 9 (8/K3p1P1/p5N1/Q1p3pq/r2k2b1/b1RP3r/5PB1/2B3N1 w - - 0 1)

Pimenov, Sergey Ivanovich

Pimenov, Vitaly Ivanovich

3rd Prize, BCF 001. Ty., 1929-1930

8/K3p1P1/p5N1/Q1p3pq/r2k2b1/b1RP3r/5PB1/2B3N1

#2

10 + 10

887 Mate in Two Moves 1931
422 Suomen Tehtavaniekat 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Be3#
    • 1...Rh2
      • 2.Be3#
    • 1...Re3
      • 2.Bxe3#
      • 2.fxe3#
    • 1...Rh4
      • 2.Be3#
    • 1...Rb4
      • 2.Qxc5#
    • 1...Bxc1
      • 2.Qxc5#
    • 1...Bb2
      • 2.Qxc5#
    • 1...c4
      • 2.Qe5#
  • Tries
    • 1.Rc4+?
      • 1...Kxd3
        • 2.Se5#
        • 2.Qc3#
      • 1...Rxc4!
    • 1.Qxa4+?
      • 1...Kxc3
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#
      • 1...Bb4!
  • Keys
    • 1.g8Q!
      • threat
        • 2.Qd5#
      • 1...Rxa5
        • 2.Qc4#
      • 1...Rb4
        • 2.Qxc5#
      • 1...Bb4
        • 2.Qc4#
      • 1...Rf3
        • 2.Se2#
      • 1...Bf3
        • 2.Be3#
      • 1...Be6
        • 2.Qg7#
      • 1...e6
        • 2.Qgd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • R(b);N_GUARD::B(A)
    • R(c);S_CUTB(a)::QAB1(G),XP(f)
    • B(a);N_GUARD,XB(A)::QAB1(G),XP(f)
    • B(a);N_GUARD::QAB1(G),XP(f)
    • P(f);OGATE::QAB1(G)
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • R(c);XR(E)
    • Try
      • Q(G);CHECK,XR(c)
      • Vars
        • K(d);S_FLIGHT,XR(E)::QAR1(G)
        • P(f);P_SPINP(f)::QAR1(G),XP(f)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • P(J);
    • Threat
      • QAR1(J)
    • Vars
      • R(c);N_GUARD,XQ(G)::QAR1(J)
      • R(c);S_CUTB(a)::QAB1(G),XP(f)
      • B(a);S_CUTR(c)::QAR1(J)
      • R(b);S_CUTB(e)::S(B)
      • B(e);S_CUTR(b)::B(A)
      • B(e);S_CUTP(j)::QAB(J)
      • P(j);S_CUTB(e)::QAR(J)
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