MESON Chess Problem Database

Problem Display
PID: 6180 (6B1/1p1N4/nR2qp1K/Q1nk4/p1p1p3/B3p2b/2Nb1r2/3Rr3 w - - 0 1)

Ovchinnikov, Valentin N

3rd Prize, Shakhmaty, 1927

6B1/1p1N4/nR2qp1K/Q1nk4/p1p1p3/B3p2b/2Nb1r2/3Rr3

#2

8 + 14

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Bxe6#
    • 1...Bf1
      • 2.Bxe6#
    • 1...Bg2
      • 2.Bxe6#
    • 1...Sb4
      • 2.Qxc5#
    • 1...Sc7
      • 2.Qxc5#
    • 1...Sb8
      • 2.Qxc5#
    • 1...e2+
      • 2.Rxd2#
    • 1...f5+
      • 2.Bxe6#
  • Tries
    • 1.Sb4+?
      • 1...Sxb4
        • 2.Qxc5#
      • 1...Kd4!
    • 1.Bxc5?
      • threat
        • 2.Rd6#
      • 1...e2+
        • 2.Se3#
        • 2.Rxd2#
        • 2.Qxd2#
      • 1...f5+
        • 2.Bxe6#
      • 1...Sxc5
        • 2.Qxc5#
      • 1...c3!
    • 1.Rxe6?
      • threat
        • 2.Sb6#
      • 1...e2+
        • 2.Rxd2#
      • 1...b6
        • 2.Sxb6#
      • 1...Bxe6!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qd4#
      • 1...e2+
        • 2.Se3#
      • 1...f5+
        • 2.Sf6#
      • 1...Sb3
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(c);S_CUTB(e)::B(H),XQ(l)
    • B(e);N_GUARD::B(H),XQ(l)
    • S(k);N_GUARD::QAR1(D),XS(i)
    • P(d);CHECK,N_GUARD,S_CUTR(c)::R(A),XB(b)
    • P(m);CHECK,S_CUTB(e)::B(H),XQ(l)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • S(k);XS(B)::QAR1(D),XS(i)
      • Refutation
        • K(j);N_SPINQ(l),N_SPINS(i),P-FLIGHT
    • Try
      • B(C);XS(i)
      • Threat
        • R1(E)
      • Vars
        • P(m);CHECK,S_CUTB(e)::B(H),XQ(l)
        • S(k);OGATE,P_SPINS(k),XB(C)::QAR1(D),XS(k)
      • Refutation
        • P(g);
    • Try
      • R(E);XQ(l)
      • Threat
        • S(G)
      • Vars
        • P(d);CHECK,N_GUARD,S_CUTR(c)::R(A),XB(b)
        • P(n);::S(G),XP(n)
      • Refutation
        • B(e);XR(E)
  • Actual
    • Q(D);N_PINS(i)
    • Threat
      • QAR1(D)
    • Vars
      • P(d);CHECK,S_CUTR(a)::S(B)
      • P(m);CHECK,S_CUTR(c)::S(G)
      • S(i);::R1(E)
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