MESON Chess Problem Database

Problem Display
PID: 63533 (8/q7/2pB1p2/p5rQ/3bkP2/1P2N1p1/2PRN1Kn/1B2R3 w - - 0 1)

Erokhin, Vladimir Alekseevich

3rd Prize, Ceramica di Imola, 1975

8/q7/2pB1p2/p5rQ/3bkP2/1P2N1p1/2PRN1Kn/1B2R3

#2

11 + 9

3771 FIDE Album (1974-1976) 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Sxg3#
    • 1...Rc5
      • 2.Sxg3#
    • 1...Rd5
      • 2.Sxg3#
    • 1...Rf5
      • 2.Sxg3#
    • 1...Rxh5
      • 2.Sxg3#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Bxe3
      • 2.c3#
      • 2.c4#
    • 1...Bc5
      • 2.Sc3#
    • 1...Bb6
      • 2.Sc3#
    • 1...Sf1
      • 2.Qf3#
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sg4
      • 2.Sxg3#
  • Tries
    • 1.Sd1?
      • threat
        • 2.c4#
      • 1...Kf5
        • 2.Sxg3#
      • 1...Bc3
        • 2.Sxg3#
      • 1...Kd5!
    • 1.Sd5?
      • threat
        • 2.c4#
      • 1...Kf5
        • 2.Sxg3#
      • 1...Rxd5
        • 2.Sc3#
        • 2.Sxg3#
        • 2.Sxd4#
      • 1...cxd5
        • 2.Sxg3#
        • 2.Sxd4#
      • 1...Bc3
        • 2.Sxg3#
      • 1...Kxd5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.c4#
      • 1...Kd5
        • 2.Sc3#
      • 1...Kxf5
        • 2.Sxg3#
      • 1...Rxf5
        • 2.Sc3#
      • 1...Bc3
        • 2.Sexg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • R(f);N_GUARD::S(E),XP(b)
    • R(f);N_GUARD,XQ(J)::S(E),XP(b)
    • B(c);N_GUARD::S(E),XB(c)
    • B(c);N_GUARD::S(E)
    • S(a);N_GUARD::QAB1(J)
    • S(a);N_GUARD::QAB1(J),XS(a)
    • S(a);S_CUTR(f)::S(E),XP(b)
  • Tries
    • Try
      • S(H);
      • Threat
        • B(A)+P(C)
      • Vars
        • K(d);P_SPINR(f),S_FLIGHT::S(E),XP(b)
        • B(c);::R(B)+S(E),DCHECK,XP(b)
      • Refutation
        • K(d);P_SPINB(c),P_SPINR(f),S_FLIGHT
    • Try
      • S(H);
      • Threat
        • B(A)+P(C)
      • Vars
        • K(d);P_SPINR(f),S_FLIGHT::S(E),XP(b)
        • B(c);::R(B)+S(E),DCHECK,XP(b)
      • Refutation
        • K(d);P_SPINB(c),P_SPINR(f),S_FLIGHT,XS(H)
  • Actual
    • S(H);
    • Threat
      • B(A)+P(C)
    • Vars
      • K(d);P_SPINB(c),S_FLIGHT::S(E)
      • K(d);P_SPINR(f),S_FLIGHT,XS(H)::S(E),XP(b)
      • R(f);XS(H)::R(B)+S(E),DCHECK
      • B(c);::R(B)+S(E),DCHECK,XP(b)
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