MESON Chess Problem Database

Problem Display
PID: 275485 (8/1p5p/pQ5B/N4P2/2pPk1p1/2P3p1/4N1Rp/7K w - - 0 1)

Boichuk, Volodimir

Problemist Ukraini, 2023

8/1p5p/pQ5B/N4P2/2pPk1p1/2P3p1/4N1Rp/7K

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qb1#
    • 1...Kf3
      • 2.Qxb7#
    • 1...Kd5
      • 2.Qe6#
    • 1...Kxf5
      • 2.Sxg3#
  • Tries
    • 1.Sc1?
      • 1...Kf3
        • 2.Qxb7#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kxf5!
    • 1.Sxg3+?
      • 1...Kf3
        • 2.Qxb7#
      • 1...Kd5
        • 2.Qc5#
        • 2.Qd8#
        • 2.Qe6#
      • 1...Kd3!
    • 1.Sxb7?
      • 1...Kd3
        • 2.Qb1#
      • 1...Kf3
        • 2.Qc6#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kxf5
        • 2.Sxg3#
      • 1...a5!
    • 1.Rxg3?
      • threat
        • 2.Qe6#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kxf5!
    • 1.Qb1+?
      • 1...Kf3
        • 2.Qxb7#
      • 1...Kd5!
    • 1.Qe6+?
      • 1...Kf3
        • 2.Qd5#
        • 2.Qe3#
      • 1...Kd3!
    • 1.Qxb7+?
      • 1...Kd3
        • 2.Qb1#
      • 1...Kxf5!
  • Keys
    • 1.d5!
      • 1...Kd3
        • 2.Qb1#
      • 1...Kf3
        • 2.Qe3#
      • 1...Kxd5
        • 2.Qd4#
      • 1...Ke5
        • 2.Qe6#
      • 1...Kxf5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);N_GUARD,S_FLIGHT::QAB(H)
    • K(d);N_GUARD,S_FLIGHT::QAB(H),XP(g)
    • K(d);N_GUARD,S_FLIGHT::QAB1(H)
    • K(d);N_GUARD,S_FLIGHT,XP(G)::S(B),XP(b)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(d);N_GUARD,S_FLIGHT::QAB(H),XP(g)
        • K(d);N_GUARD,S_FLIGHT::QAB1(H)
      • Refutation
        • K(d);S_FLIGHT,XP(G)
    • Try
      • S(B);CHECK,XP(b)
      • Vars
        • K(d);N_GUARD,S_FLIGHT::QAB(H),XP(g)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(F);XP(g)
      • Vars
        • K(d);N_GUARD,S_FLIGHT::QAB(H)
        • K(d);N_GUARD,S_FLIGHT::QAB1(H)
        • K(d);N_GUARD,S_FLIGHT,XP(G)::S(B),XP(b)
      • Refutation
        • P(f);
    • Try
      • R(C);XP(b)
      • Threat
        • QAR2(H)
      • Vars
        • K(d);S_FLIGHT::QAB1(H)
      • Refutation
        • K(d);S_FLIGHT,XP(G)
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);N_GUARD,S_FLIGHT::QAB(H),XP(g)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(H);CHECK,XP(g)
      • Vars
        • K(d);N_GUARD,S_FLIGHT::QAB(H)
      • Refutation
        • K(d);S_FLIGHT,XP(G)
  • Actual
    • P(E);
    • Vars
      • K(d);N_GUARD,S_FLIGHT::QAB(H)
      • K(d);N_GUARD,S_FLIGHT::QAR1(H)
      • K(d);N_GUARD,S_FLIGHT,XP(E)::QAR1(H)
      • K(d);N_GUARD,P-FLIGHT::QAR1(H)
      • K(d);N_GUARD,S_FLIGHT,XP(G)::QAB1(H)
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