MESON Chess Problem Database

Problem Display
PID: 197307 (3B1NR1/1p1P2n1/1Rp2p2/1N1p1k1p/5p1K/4pQ1P/4P3/7B w - - 0 1)

Erokhin, Vladimir Alekseevich

Zadachi i Etyudi, 1996

3B1NR1/1p1P2n1/1Rp2p2/1N1p1k1p/5p1K/4pQ1P/4P3/7B

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Se8
      • 2.Qxh5#
    • 1...d4
      • 2.Qe4#
    • 1...cxb5
      • 2.Qxd5#
    • 1...c5
      • 2.Qxd5#
  • Tries
    • 1.Bc7?
      • threat
        • 2.Sd4#
        • 2.Qxf4#
      • 1...cxb5
        • 2.Qxd5#
        • 2.Qxf4#
      • 1...d4
        • 2.Sxd4#
        • 2.Qe4#
        • 2.Qxf4#
      • 1...c5
        • 2.Qxd5#
        • 2.Qxf4#
      • 1...Se6!
    • 1.Rxc6?
      • threat
        • 2.Qxd5#
      • 1...Ke5
        • 2.Qxd5#
      • 1...d4
        • 2.Rc5#
        • 2.Qe4#
        • 2.Qd5#
      • 1...bxc6!
    • 1.Qg4+?
      • 1...Ke5
        • 2.Sg6#
        • 2.Bc7#
      • 1...hxg4!
    • 1.Qxe3?
      • threat
        • 2.Sd4#
        • 2.Sd6#
      • 1...cxb5
        • 2.Rxf6#
      • 1...Se6
        • 2.Sd6#
        • 2.Qxe6#
      • 1...Se8
        • 2.Sd4#
        • 2.Qe6#
      • 1...d4
        • 2.Sxd4#
        • 2.Sd6#
        • 2.Qe4#
      • 1...c5
        • 2.Sd6#
        • 2.Rxf6#
      • 1...fxe3!
  • Keys
    • 1.Sg6!
      • 1...Ke6
        • 2.Qxd5#
      • 1...Kxg6
        • 2.Qxh5#
      • 1...cxb5
        • 2.Rxf6#
      • 1...Se6
        • 2.Sd6#
      • 1...Se8
        • 2.Sd4#
      • 1...d4
        • 2.Qe4#
      • 1...c5
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(i);N_GUARD::QAR2(C),XP(e)
    • P(c);N_GUARD::QAB1(C)
    • P(f);N_GUARD,XS(F)::QAR2(C),XP(c)
    • P(f);N_GUARD::QAR2(C),XP(c)
  • Tries
    • Try
      • B(I);
      • Threat
        • DUALS(2)
      • Refutation
        • S(i);
    • Try
      • R(G);XP(f)
      • Threat
        • QAR2(C),XP(c)
      • Vars
        • K(d);N_SPINP(b),P-FLIGHT::QAR1(C),XP(c)
      • Refutation
        • P(h);XR(G)
    • Try
      • Q(C);CHECK,N_PINP(b)
      • Refutation
        • P(e);XQ(C)
    • Try
      • Q(C);N_PINP(b),XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);OGATE,XS(F)::R1(G),XP(g)
      • Refutation
        • P(b);XQ(C)
  • Actual
    • S(J);
    • Vars
      • K(d);N_SPINP(b),P_SPINP(f),S_FLIGHT::QAB1(C),XP(c)
      • K(d);N_SPINP(b),P_SPINS(i),S_FLIGHT,XS(J)::QAB1(C),XP(e)
      • P(f);OGATE,XS(F)::R1(G),XP(g)
      • S(i);SBLOCK::S(F)
      • S(i);::S(F)
      • P(c);N_GUARD::QAB1(C)
      • P(f);OGATE::R1(G),XP(g)
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