MESON Chess Problem Database

Problem Display
PID: 71923 (2n5/2rP4/5Q2/B1p4R/3PP1N1/1P1kb1Np/4qp1r/1Kn2B2 w - - 0 1)

Slesarenko, Anatoly Vasilevich

2nd Prize, 64 Shakhmatnoe obozrenie, 2009

2n5/2rP4/5Q2/B1p4R/3PP1N1/1P1kb1Np/4qp1r/1Kn2B2

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Bxe2#
    • 1...Sxb3
      • 2.Bxe2#
    • 1...cxd4
      • 2.Se5#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Qxe3#
      • 1...Kxd4
        • 2.Rd5#
      • 1...cxd4
        • 2.Se5#
      • 1...Sxb3!
    • 1.Qa6+?
      • 1...Kxd4
        • 2.Rd5#
      • 1...c4!
    • 1.dxc5?
      • threat
        • 2.Qc3#
      • 1...Bd2
        • 2.Rd5#
      • 1...Bd4
        • 2.Qa6#
      • 1...Sa2
        • 2.Bxe2#
      • 1...Rxc5!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Se5#
      • 1...Bxd4
        • 2.Qf3#
      • 1...Bd2
        • 2.dxc5#
      • 1...Bf4
        • 2.dxc5#
      • 1...Bg5
        • 2.dxc5#
      • 1...Bh6
        • 2.dxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::B(B),XQ(b)
    • S(a);N_GUARD,XP(C)::B(B),XQ(b)
    • P(h);SBLOCK,XP(E)::S(G)
  • Tries
    • Try
      • Q(J);P_PINB(f)
      • Threat
        • QAR1(J),XB(f)
      • Vars
        • K(e);N_SPINB(f),N_SPINQ(b),OGATEB,P-FLIGHT,XP(E)::R1(I)
        • P(h);SBLOCK,XP(E)::S(G)
      • Refutation
        • S(a);XP(C)
    • Try
      • Q(J);CHECK
      • Vars
        • K(e);N_SPINQ(b),P-FLIGHT,XP(E)::R1(I)
      • Refutation
        • P(h);P_SPINP(h)
    • Try
      • P(E);XP(h)
      • Threat
        • QAR1(J)
      • Vars
        • B(f);N_GUARD::R(I)
        • B(f);SBLOCK::QAB(J)
        • S(a);N_GUARD::B(B),XQ(b)
      • Refutation
        • R(i);XP(E)
  • Actual
    • R(I);
    • Threat
      • S(G)
    • Vars
      • B(f);OGATEB,P_SPINB(f),XP(E)::QAR2(J)
      • B(f);N_GUARD::R(I)+P(E),XP(h)
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