MESON Chess Problem Database

Problem Display
PID: 153017 (r1N3B1/5R2/p1PR3n/1PN5/2kb4/Qp1p4/3P4/1K5b w - - 0 1)

Usmanov, Rashid R

1st HM., Uralski Problemist, 2006

r1N3B1/5R2/p1PR3n/1PN5/2kb4/Qp1p4/3P4/1K5b

#2

10 + 8

15323 FIDE Album (2004-2006) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb5
      • 2.Rb7#
    • 1...axb5
      • 2.Sb6#
  • Tries
    • 1.Se6?
      • threat
        • 2.Qa4#
      • 1...axb5
        • 2.Rxd4#
      • 1...Bc3
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Kxb5!
    • 1.Sb7?
      • threat
        • 2.Qa4#
      • 1...Kxb5
        • 2.Qxb3#
      • 1...Bc3
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...axb5!
    • 1.Rf5+?
      • 1...Kxb5
        • 2.Qa4#
      • 1...Sf7
        • 2.Qxb3#
        • 2.Qa4#
      • 1...Sxg8
        • 2.Qxb3#
        • 2.Qa4#
      • 1...Bd5!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Qxb3#
      • 1...Kxb5
        • 2.Qa4#
      • 1...Kxd5
        • 2.Rf5#
      • 1...Bxd5
        • 2.Sd6#
      • 1...Bxc5
        • 2.Qxc5#
      • 1...b2
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(d);S_FLIGHT,XP(D)::R(H)
    • P(f);SBLOCK,XP(D)::S(I)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR2(C)
      • Vars
        • P(f);SBLOCK,XP(D)::R1(G),XB(e)
        • B(e);N_GUARD::QAR1(C)
        • B(e);N_GUARD::QAR1(C),XB(e)
      • Refutation
        • K(d);S_FLIGHT,XP(D)
    • Try
      • S(E);
      • Threat
        • QAR2(C)
      • Vars
        • K(d);S_FLIGHT,XP(D)::QAR2(C),XP(b)
        • B(e);N_GUARD::QAR1(C)
        • B(e);N_GUARD::QAR1(C),XB(e)
      • Refutation
        • P(f);XP(D)
    • Try
      • R(H);CHECK
      • Vars
        • K(d);S_FLIGHT,XP(D)::QAB1(C)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • R(G);
    • Threat
      • QAB1(C),XP(b)
    • Vars
      • K(d);S_FLIGHT,XP(D)::QAB1(C)
      • K(d);OGATEB,S_FLIGHT,XR(G)::B(J)+R(H),DCHECK
      • B(a);SBLOCK,XR(G)::S(I)
      • B(e);OGATE,XS(E)::QAR1(C),XB(e)
      • P(b);::QAB1(C)
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