MESON Chess Problem Database

Problem Display
PID: 249517 (q3N3/2p2NQK/2p1Pp2/2p1RP2/2Bk4/1P1p1p1p/3BPn2/4rr2 w - - 0 1)

Slesarenko, Anatoly Vasilevich

3rd HM., Schach-Aktiv, 1986

q3N3/2p2NQK/2p1Pp2/2p1RP2/2Bk4/1P1p1p1p/3BPn2/4rr2

#2

11 + 12

3269 BCPS Solving Ty. (Cheltenham) 2001
15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.e3#
    • 1...Rb1
      • 2.e3#
    • 1...Rc1
      • 2.e3#
    • 1...Rd1
      • 2.e3#
    • 1...Sd1
      • 2.Qg4#
    • 1...Sh1
      • 2.Qg4#
    • 1...Sg4
      • 2.Qxg4#
    • 1...fxe5
      • 2.Qxe5#
  • Tries
    • 1.Re3?
      • threat
        • 2.Qxf6#
      • 1...Se4
        • 2.Rxd3#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Qd8!
    • 1.Rd5+?
      • 1...Ke4
        • 2.Sxf6#
      • 1...cxd5!
    • 1.Qxf6?
      • threat
        • 2.Re3#
      • 1...Qd8
        • 2.Qxd8#
      • 1...Se4
        • 2.Rd5#
      • 1...Sg4!
    • 1.Qh6?
      • threat
        • 2.Qe3#
      • 1...Sd1
        • 2.Qf4#
        • 2.Qh4#
      • 1...Sg4
        • 2.Qf4#
      • 1...Rxe2!
    • 1.Qg4+?
      • 1...Se4
        • 2.Rxe4#
        • 2.Qxe4#
      • 1...Sxg4!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Sxf3#
      • 1...Kxe5
        • 2.Qxf6#
      • 1...fxe2
        • 2.Sf3#
      • 1...fxe5
        • 2.Qd7#
      • 1...fxg5
        • 2.Re3#
      • 1...Sd1
        • 2.Re4#
      • 1...Sh1
        • 2.Re4#
      • 1...Se4
        • 2.Rxe4#
      • 1...Sg4
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::P(B)
    • S(c);N_GUARD::QAR(I)
    • S(c);N_GUARD::QAR(I),XS(c)
    • P(j);OGATE,P_SPINP(j),XR(E)::QAB1(I),XP(j)
  • Tries
    • Try
      • R(E);P_PINP(j)
      • Threat
        • QAB(I),XP(j)
      • Vars
        • S(c);N_GUARD,SBLOCK::R1(E),XP(d)
        • S(c);N_GUARD::QAR(I),XS(c)
      • Refutation
        • Q(l);
    • Try
      • R(E);CHECK,P_PINP(j)
      • Vars
        • K(g);N_SPINP(j),P-FLIGHT::S(K),XP(j)
      • Refutation
        • P(i);XR(E)
    • Try
      • Q(I);XP(j)
      • Threat
        • QAB(I)+R(E)
      • Vars
        • Q(l);N_GUARD::QAR(I),XQ(l)
        • S(c);SBLOCK::QAB(I)+R(E),DCHECK
      • Refutation
        • S(c);
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Vars
        • S(c);N_GUARD::QAR2(I)
      • Refutation
        • R(a);XP(B)
    • Try
      • Q(I);CHECK
      • Refutation
        • S(c);XQ(I)
  • Actual
    • S(H);
    • Threat
      • S(H),XP(e)
    • Vars
      • K(g);OGATEB,P_SPINP(j),S_FLIGHT,XR(E)::QAB1(I),XP(j)
      • P(e);XP(B)::S(H)
      • P(j);P_SPINP(j),SBLOCK,XR(E)::QAR(I)
      • P(j);OGATEB,XS(H)::QAB(I)+R(E)
      • S(c);N_GUARD::R1(E)
      • S(c);N_GUARD::R1(E),XS(c)
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