MESON Chess Problem Database

Problem Display
PID: 145709 (B7/1npN1p2/KpR2Q2/2pk4/3N4/P2p1Pbp/1PP1P2q/8 w - - 0 1)

Dyachuk, Vasyl Vasilovich

1st Prize, Sykina MT, 2009

B7/1npN1p2/KpR2Q2/2pk4/3N4/P2p1Pbp/1PP1P2q/8

#2

11 + 10

23 Die Schwalbe 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sa5
      • 2.Rxc5#
    • 1...Sd6
      • 2.Rxc5#
    • 1...Sd8
      • 2.Rxc5#
    • 1...c4
      • 2.e4#
    • 1...b5
      • 2.Rxc5#
  • Tries
    • 1.Kb5?
      • threat
        • 2.c4#
        • 2.e4#
      • 1...Sd6+
        • 2.Rxd6#
      • 1...Qxe2
        • 2.c4#
      • 1...dxc2
        • 2.e4#
      • 1...dxe2
        • 2.c4#
      • 1...cxd4
        • 2.Qxf7#
      • 1...Sa5
        • 2.Rxc5#
        • 2.Rd6#
        • 2.e4#
      • 1...c4
        • 2.e4#
      • 1...Be5!
    • 1.Rd6+?
      • 1...Kc4
        • 2.Qxf7#
        • 2.cxd3#
        • 2.exd3#
      • 1...cxd6
        • 2.Sxb6#
      • 1...Bxd6!
    • 1.Qe5+?
      • 1...Kc4
        • 2.cxd3#
        • 2.exd3#
      • 1...Bxe5!
    • 1.Qe6+?
      • 1...Kxd4
        • 2.Qe4#
        • 2.c3#
        • 2.e3#
      • 1...fxe6!
    • 1.c3?
      • threat
        • 2.Qxf7#
      • 1...Kc4
        • 2.Qxf7#
      • 1...cxd4
        • 2.c4#
      • 1...Sd6
        • 2.Rxc5#
      • 1...Sd8
        • 2.Rxc5#
      • 1...Qxe2!
  • Keys
    • 1.e3!
      • threat
        • 2.Qxf7#
      • 1...Kc4
        • 2.Qxf7#
      • 1...cxd4
        • 2.e4#
      • 1...Sd6
        • 2.Rxc5#
      • 1...Sd8
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(h);::B(K)+R(H),DCHECK,XP(e)
    • P(e);::P(C)
    • P(g);N_GUARD::R1(H),XP(e)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(h);CHECK::B(K)+R(H),DCHECK,XS(h)
        • Q(a);XP(C)::P(B)
        • P(b);XP(B)::P(C)
        • P(b);XP(C)::P(B)
        • P(e);SBLOCK,XS(F)::QAB(I),XP(j)
        • P(e);::P(C)
      • Refutation
        • B(c);
    • Try
      • R(H);CHECK,P_PINS(h)
      • Vars
        • P(i);XR(H)::S(J),XP(g)
      • Refutation
        • B(c);XR(H)
    • Try
      • Q(I);CHECK
      • Refutation
        • B(c);XQ(I)
    • Try
      • Q(I);CHECK
      • Refutation
        • P(j);XQ(I)
    • Try
      • P(B);
      • Threat
        • QAB(I),XP(j)
      • Vars
        • K(f);P_SPINP(e),S_FLIGHT::QAB(I),XP(j)
        • P(e);XS(F)::P(B)
        • S(h);::B(K)+R(H),DCHECK,XP(e)
      • Refutation
        • Q(a);XP(C)
  • Actual
    • P(C);
    • Threat
      • QAB(I),XP(j)
    • Vars
      • K(f);P_SPINP(e),S_FLIGHT::QAB(I),XP(j)
      • P(e);XS(F)::P(C)
      • S(h);::B(K)+R(H),DCHECK,XP(e)
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