MESON Chess Problem Database

Problem Display
PID: 249671 (8/1N6/2PN1P2/3k4/8/P5R1/5RKQ/6B1 w - - 0 1)

Nikitin, V?

Uralski Problemist, 2007

8/1N6/2PN1P2/3k4/8/P5R1/5RKQ/6B1

#2

10 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Rf5#
  • Tries
    • 1.Rf5+?
      • 1...Ke6
        • 2.Re3#
      • 1...Kxc6!
    • 1.Rd3+?
      • 1...Ke6
        • 2.Sc5#
        • 2.Sd8#
      • 1...Kxc6!
    • 1.Re3?
      • 1...Kd4
        • 2.Rd2#
        • 2.Qe5#
      • 1...Kxc6!
    • 1.Rg5+?
      • 1...Kd4
        • 2.Rf3#
      • 1...Ke6
        • 2.Sc5#
        • 2.Sd8#
        • 2.Re5#
        • 2.Qe5#
        • 2.Qh3#
      • 1...Kxc6!
    • 1.Qh4?
      • threat
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Ke6
        • 2.Qe4#
      • 1...Kxc6!
    • 1.Qh5+?
      • 1...Kd4
        • 2.Rf1#
        • 2.Ra2#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Re2#
        • 2.Rff3#
        • 2.Rf4#
        • 2.Rf5#
        • 2.Qc5#
      • 1...Ke6
        • 2.Re3#
        • 2.Qf5#
      • 1...Kxc6!
    • 1.Qh7?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Rf5#
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Ke6
        • 2.Qe4#
        • 2.Qf5#
      • 1...Kxc6!
  • Keys
    • 1.Sd8!
      • 1...Kd4
        • 2.Rf5#
      • 1...Kc5
        • 2.Rd2#
      • 1...Ke5
        • 2.Rd3#
      • 1...Kxd6
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,P-FLIGHT::B(A)+R(B)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::R(F)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • R(F);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • R(F);
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • R(F);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::B(A)+R(B)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
        • K(a);S_FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
  • Actual
    • S(J);
    • Vars
      • K(a);N_GUARD,P-FLIGHT::B(A)+R(B)
      • K(a);N_GUARD,P-FLIGHT::QAB(D)+R(F)
      • K(a);N_GUARD,P-FLIGHT,XS(H)::QAB(D)+R(F)
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