MESON Chess Problem Database

Problem Display
PID: 46657 (3Nn2n/5b2/P2N4/R1pk4/2pPpbP1/2Pr4/8/KQ3BB1 w - - 0 1)

Erokhin, Vladimir Alekseevich

Melnichenko, Viktor Oleksandrovich

Slesarenko, Anatoly Vasilevich

1st Prize, The Problemist, 1999/II

3Nn2n/5b2/P2N4/R1pk4/2pPpbP1/2Pr4/8/KQ3BB1

#2

11 + 9

102 Probleemblad 2003
145 StrateGems 2003
56 The Problemist 2003
23 Die Schwalbe 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd6
      • 2.Qb7#
    • 1...Sxd6
      • 2.Rxc5#
  • Tries
    • 1.Sxc4?
      • threat
        • 2.Rxc5#
      • 1...Kxc4
        • 2.Rxc5#
      • 1...Rxd4
        • 2.Qb7#
      • 1...Bd6
        • 2.Sb6#
      • 1...e3!
    • 1.Sf5?
      • threat
        • 2.Rxc5#
        • 2.Qb7#
      • 1...e3
        • 2.Bg2#
        • 2.Qb7#
      • 1...Rd1
        • 2.Rxc5#
      • 1...Bd6
        • 2.Qb7#
      • 1...Sd6
        • 2.Se7#
        • 2.Rxc5#
      • 1...Rxd4!
    • 1.S6b7?
      • threat
        • 2.Rxc5#
      • 1...e3
        • 2.Bg2#
      • 1...Bd6!
    • 1.S6xf7?
      • threat
        • 2.Rxc5#
        • 2.Qb7#
      • 1...Rxd4
        • 2.Qb7#
      • 1...e3
        • 2.Bg2#
        • 2.Qb7#
      • 1...Rd1
        • 2.Rxc5#
      • 1...Bd6
        • 2.Qb7#
      • 1...Sd6
        • 2.Rxc5#
      • 1...Sxf7!
    • 1.Sc8?
      • threat
        • 2.Rxc5#
        • 2.Qb7#
      • 1...e3
        • 2.Bg2#
        • 2.Qb7#
      • 1...Rd1
        • 2.Rxc5#
      • 1...Bd6
        • 2.Sb6#
        • 2.Qb7#
      • 1...Sd6
        • 2.Sb6#
        • 2.Se7#
        • 2.Rxc5#
      • 1...Rxd4!
    • 1.Qb6?
      • threat
        • 2.Rxc5#
        • 2.Qxc5#
        • 2.Qc6#
      • 1...Rxd4
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Bxd6
        • 2.Qc6#
        • 2.Qb7#
      • 1...Rd1+!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Qb7#
      • 1...Kxe4
        • 2.Bg2#
      • 1...Rxd4
        • 2.Rxc5#
      • 1...Rd1
        • 2.Rxc5#
      • 1...Sd6
        • 2.Sf6#

There are these versions: 75575

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(d);SBLOCK,XS(J)::QAB(B)
    • S(h);SBLOCK,XS(J)::R1(H),XP(e)
  • Tries
    • Try
      • S(J);XP(b)
      • Threat
        • R1(H),XP(e)
      • Vars
        • K(f);N_SPINP(e),P_SPINR(a),S_FLIGHT,XS(J)::R1(H),XP(e)
        • R(a);XP(F)::QAB(B)
        • B(d);SBLOCK::S(J)
      • Refutation
        • P(c);
    • Try
      • S(J);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);P_PINQ(B)::R1(H),XP(e)
        • B(d);::QAB(B)
      • Refutation
        • R(a);XP(F)
    • Try
      • S(J);
      • Threat
        • R1(H),XP(e)
      • Vars
        • P(c);OGATEB::B(C)
      • Refutation
        • B(d);
    • Try
      • S(J);XB(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XP(F)::QAB(B)
        • R(a);P_PINQ(B)::R1(H),XP(e)
        • B(d);::QAB(B)
        • S(h);::R1(H),XP(e)
      • Refutation
        • S(i);XS(J)
    • Try
      • S(J);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);P_PINQ(B)::R1(H),XP(e)
      • Refutation
        • R(a);XP(F)
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Refutation
        • R(a);CHECK
  • Actual
    • S(J);XP(c)
    • Threat
      • QAB(B)
    • Vars
      • K(f);N_SPINP(e),OGATEB,P_SPINR(a),S_FLIGHT,XS(J)::B(C)
      • R(a);XP(F)::R1(H),XP(e)
      • R(a);P_PINQ(B)::R1(H),XP(e)
      • S(h);N_GUARD,SBLOCK::S(J)
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