MESON Chess Problem Database

Problem Display
PID: 235106 (8/5Q2/3B3K/4pN2/3Nk3/r1n2R2/8/8 w - - 0 1)

Shanshin, Valery Yurevich

Gaudium, 2018

8/5Q2/3B3K/4pN2/3Nk3/r1n2R2/8/8

#2

6 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Qb7#
    • 1...Sd1
      • 2.Qb7#
    • 1...Sa2
      • 2.Qb7#
    • 1...Se2
      • 2.Qb7#
    • 1...Sa4
      • 2.Qb7#
    • 1...Sb5
      • 2.Qb7#
    • 1...exd4
      • 2.Sg3#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Re3#
      • 1...exd4
        • 2.Sg3#
      • 1...Sb1
        • 2.Qb7#
      • 1...Sd1
        • 2.Qb7#
      • 1...Sa2
        • 2.Qb7#
      • 1...Se2
        • 2.Qb7#
      • 1...Sa4
        • 2.Qb7#
      • 1...Sb5
        • 2.Qb7#
      • 1...Sd5!
    • 1.Sc2?
      • threat
        • 2.Sg3#
      • 1...Se2
        • 2.Qb7#
      • 1...Kxf3!
    • 1.Se2?
      • threat
        • 2.Sfg3#
        • 2.Re3#
      • 1...Sxe2
        • 2.Qb7#
      • 1...Sb1
        • 2.Sfg3#
        • 2.Qb7#
      • 1...Sd1
        • 2.Sfg3#
        • 2.Qb7#
      • 1...Sa2
        • 2.Sfg3#
        • 2.Qb7#
      • 1...Sa4
        • 2.Sfg3#
        • 2.Qb7#
      • 1...Sb5
        • 2.Sfg3#
        • 2.Qb7#
      • 1...Sd5
        • 2.Sfg3#
      • 1...Kxf3!
    • 1.Sb5?
      • threat
        • 2.Sg3#
      • 1...Sxb5
        • 2.Qb7#
      • 1...Se2
        • 2.Qb7#
      • 1...Kxf3!
    • 1.Qe8?
      • threat
        • 2.Qxe5#
      • 1...Kd5
        • 2.Qc6#
      • 1...Ra5!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Sg3#
      • 1...exd4
        • 2.Rf4#
      • 1...Se2
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • S(b);N_GUARD::QAB(F)
    • P(d);SBLOCK,XS(B)::S(C)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • R1(A)
      • Vars
        • P(d);SBLOCK,XS(B)::S(C)
        • S(b);N_GUARD::QAB(F)
      • Refutation
        • S(b);
    • Try
      • S(B);
      • Threat
        • S(C)
      • Vars
        • S(b);N_GUARD::QAB(F)
      • Refutation
        • K(c);S_FLIGHT,XR(A)
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD,XS(B)::QAB(F)
        • S(b);::S(C)
      • Refutation
        • K(c);S_FLIGHT,XR(A)
    • Try
      • S(B);
      • Threat
        • S(C)
      • Vars
        • S(b);N_GUARD,XS(B)::QAB(F)
        • S(b);N_GUARD::QAB(F)
      • Refutation
        • K(c);S_FLIGHT,XR(A)
    • Try
      • Q(F);P_PINP(d)
      • Threat
        • QAR1(F),XP(d)
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAB1(F)
      • Refutation
        • R(a);
  • Actual
    • Q(F);
    • Threat
      • S(C)
    • Vars
      • P(d);N_GUARD,P_SPINP(d),XS(B)::R1(A)
      • S(b);N_GUARD::QAB(F)
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