MESON Chess Problem Database

Problem Display
PID: 168233 (R7/6K1/2Q1p3/8/1N1k4/6N1/8/8 w - - 0 1)

Petite, Efren

Chess Leopolis, 2007

R7/6K1/2Q1p3/8/1N1k4/6N1/8/8

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Sf5#
  • Tries
    • 1.Kf6?
      • 1...e5
        • 2.Sf5#
      • 1...Ke3!
    • 1.Sf1?
      • 1...e5
        • 2.Rd8#
      • 1...Ke5!
    • 1.Se2+?
      • 1...Ke5
        • 2.Ra5#
      • 1...Ke3!
    • 1.Sc2+?
      • 1...Kd3
        • 2.Rd8#
      • 1...Ke5!
    • 1.Ra2?
      • 1...Ke3
        • 2.Qe4#
      • 1...e5
        • 2.Sf5#
      • 1...Ke5!
    • 1.Ra4?
      • 1...Ke5
        • 2.Sd3#
      • 1...e5
        • 2.Sf5#
      • 1...Ke3!
    • 1.Ra6?
      • 1...Ke5
        • 2.Qe4#
        • 2.Qd6#
      • 1...e5
        • 2.Sf5#
      • 1...Ke3!
    • 1.Rd8+?
      • 1...Ke5
        • 2.Sd3#
        • 2.Qe4#
        • 2.Qd6#
        • 2.Qc7#
      • 1...Ke3!
    • 1.Qc1?
      • 1...e5
        • 2.Rd8#
      • 1...Ke5!
  • Keys
    • 1.Rf8!
      • 1...Ke3
        • 2.Qc3#
      • 1...Ke5
        • 2.Qc5#
      • 1...e5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD,SBLOCK::S(A)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(b);N_GUARD::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • P(b);SBLOCK::R(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);CHECK
      • Vars
        • K(a);S_FLIGHT::R(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(a);P-FLIGHT::R(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • P(b);N_GUARD,SBLOCK::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);S_FLIGHT::S(B)
        • P(b);N_GUARD,SBLOCK::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • P(b);N_GUARD,SBLOCK::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(b);SBLOCK::R(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(a);S_FLIGHT::QAR2(C)
      • P(b);N_GUARD,SBLOCK::S(A)
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