MESON Chess Problem Database

Problem Display
PID: 15654 (b4r2/1n1QN2p/3bnp2/1B1ppp2/4kp1K/1R2P3/4N1P1/8 w - - 0 1)

Rychkov, Vladimir Nikolaevich

Shakhmaty v SSSR, 1986

b4r2/1n1QN2p/3bnp2/1B1ppp2/4kp1K/1R2P3/4N1P1/8

#2

8 + 12

4001 Izbrannie Shakmatny Zadachi Vladimira Rychkova 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Qxd5#
    • 1...Bb4
      • 2.Qxd5#
    • 1...Bc5
      • 2.Qxd5#
    • 1...Bc7
      • 2.Qxd5#
    • 1...Bb8
      • 2.Qxd5#
    • 1...Sec5
      • 2.Qxf5#
    • 1...Sg5
      • 2.Qxf5#
    • 1...Sc7
      • 2.Qxf5#
    • 1...Sed8
      • 2.Qxf5#
    • 1...fxe3
      • 2.Bd3#
    • 1...f3
      • 2.Sg3#
    • 1...d4
      • 2.Bc6#
      • 2.Qc6#
  • Tries
    • 1.Sxf5?
      • threat
        • 2.Bd3#
      • 1...Kxf5
        • 2.Qxh7#
      • 1...Sec5
        • 2.Sc3#
      • 1...Sbc5
        • 2.Sxd6#
      • 1...d4!
    • 1.Qc6?
      • threat
        • 2.Qxd5#
        • 2.Qc2#
      • 1...Bxe7
        • 2.Qc2#
      • 1...Rc8
        • 2.Qxd5#
      • 1...Bc5
        • 2.Qxd5#
      • 1...Sd4
        • 2.Qxd5#
      • 1...Sec5
        • 2.Qxd5#
      • 1...Sc7
        • 2.Qc2#
      • 1...Sa5
        • 2.Qc2#
      • 1...Sbd8
        • 2.Qc2#
      • 1...Sbc5!
    • 1.Qxe6?
      • threat
        • 2.Qxd5#
        • 2.Qxf5#
      • 1...Sa5
        • 2.Qxf5#
      • 1...Sc5
        • 2.Qxf5#
      • 1...Sd8
        • 2.Qxf5#
      • 1...d4
        • 2.Bc6#
        • 2.Qd5#
        • 2.Qxf5#
      • 1...Bxe7!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Sec3#
      • 1...Kxd5
        • 2.Qc6#
      • 1...fxe3
        • 2.Sdc3#
      • 1...Rc8
        • 2.Sxf6#
      • 1...Bb4
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • B(f);OGATE::QAB1(G),XP(c)
    • S(g);OGATE::QAB1(G),XP(e)
    • P(b);SBLOCK,XP(D)::B(F)
    • P(b);N_GUARD::S(A)
  • Tries
    • Try
      • S(H);XP(e)
      • Threat
        • B(F)
      • Vars
        • K(a);OGATEB,P_SPINS(g),S_FLIGHT,XS(H)::QAB(G),XP(j)
        • S(g);::S(A)
        • S(i);N_GUARD::S(H),XB(f)
      • Refutation
        • P(c);
    • Try
      • Q(G);P_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XS(H)::QAB(G)
        • R(l);::QAB1(G),XP(c)
        • B(f);::QAB1(G),XP(c)
        • S(g);::QAB1(G),XP(c)
        • S(g);::QAB(G)
        • S(i);::QAB(G)
      • Refutation
        • S(i);
    • Try
      • Q(G);P_PINP(d),XS(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(i);::QAB1(G),XP(e)
      • Refutation
        • B(f);XS(H)
  • Actual
    • S(H);XP(c)
    • Threat
      • S(A)
    • Vars
      • K(a);OGATEB,P_SPINB(f),S_FLIGHT,XS(H)::QAB1(G)
      • P(b);SBLOCK,XP(D)::S(H)
      • R(l);N_GUARD::S(H),XP(h)
      • B(f);::B(F)
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