MESON Chess Problem Database

Problem Display
PID: 7436 (8/rRbp4/1n1B2p1/1P1RP2b/N1k4r/2N1P2p/2B1n3/4KQ2 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Shavirin, Valery Mikhailovich

1st Prize, Wola Gulowska, 1999

8/rRbp4/1n1B2p1/1P1RP2b/N1k4r/2N1P2p/2B1n3/4KQ2

#2

11 + 10

6166 FIDE Album (1998-2000) 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Rxd4#
    • 1...Rg4
      • 2.Qxe2#
    • 1...Rxa4
      • 2.Rxc7#
    • 1...Ra5
      • 2.Rxc7#
    • 1...Ra6
      • 2.Rxc7#
    • 1...Ra8
      • 2.Rxc7#
    • 1...Bg4
      • 2.Rd4#
  • Tries
    • 1.Sa2?
      • threat
        • 2.Rc5#
      • 1...Kxd5
        • 2.Qf7#
      • 1...Bxd6
        • 2.Sxb6#
      • 1...Sxd5
        • 2.Sb2#
      • 1...Sxa4!
    • 1.Rd3?
      • threat
        • 2.Sb2#
      • 1...Rxa4
        • 2.Rxc7#
      • 1...Sxc3
        • 2.Rd4#
      • 1...Sxa4
        • 2.Qf7#
      • 1...Bxd6!
    • 1.Qf4+?
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sxf4
        • 2.Rd4#
      • 1...Rxf4!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Rd4#
      • 1...Rxa4
        • 2.Rxc7#
      • 1...Sxc3
        • 2.Sb2#
      • 1...Sxa4
        • 2.Rd3#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Sd4
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(d);N_GUARD::R1(H),XR(d)
    • R(d);S_CUTB(e)::QAB(B),XS(a)
    • R(h);N_GUARD,XS(F)::R(K),XB(i)
    • R(h);N_GUARD::R(K),XB(i)
    • B(e);S_CUTR(d)::R1(H)
  • Tries
    • Try
      • S(D);
      • Threat
        • R1(H)
      • Vars
        • K(c);N_SPINS(a),OGATEB,S_FLIGHT,XR(H)::QAB(B)
        • B(i);N_GUARD,XB(J)::S(F),XS(f)
        • S(f);SBLOCK,XR(H)::S(F)
      • Refutation
        • S(f);XS(F)
    • Try
      • R(H);N_PINS(a)
      • Threat
        • S(F)
      • Vars
        • R(h);N_GUARD,XS(F)::R(K),XB(i)
        • S(a);XS(D)::QAB(B)+R(H),DCHECK
        • S(f);N_GUARD,XS(F)::QAB(B)
      • Refutation
        • B(i);XB(J)
    • Try
      • Q(B);CHECK,N_PINS(a)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R1(H),XS(a)
        • S(a);N_GUARD,XQ(B)::R1(H)
      • Refutation
        • R(d);XQ(B)
  • Actual
    • Q(B);N_PINS(a)
    • Threat
      • QAB(B)+R(H),DCHECK
    • Vars
      • R(h);N_GUARD,XS(F)::R(K),XB(i)
      • S(a);SBLOCK,XS(D)::S(F)
      • S(f);N_GUARD,XS(F)::QAB(B)+R(H)
      • S(f);OGATE,P_SPINS(f),XR(H)::QAB1(B),XS(f)
      • R(d);::QAB(B)+R(H),DCHECK,XR(d)
      • S(a);::QAB(B)+R(H),DCHECK,XS(a)
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