MESON Chess Problem Database

Problem Display
PID: 164928 (1B1N2q1/1R2n3/8/4r2r/1N1kb3/1P1p1P2/KP6/2Q5 w - - 0 1)

Sardella, Giuseppe

Comm., Best Problems, 2016

1B1N2q1/1R2n3/8/4r2r/1N1kb3/1P1p1P2/KP6/2Q5

#2

9 + 7

4901 Best Problems 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.Qg1#
    • 1...Qd5
      • 2.Qg1#
    • 1...Qe6
      • 2.Qg1#
    • 1...Qf7
      • 2.Qg1#
    • 1...Qh7
      • 2.Qg1#
    • 1...Qg1
      • 2.Qxg1#
    • 1...Qxd8
      • 2.Qg1#
    • 1...Qe8
      • 2.Qg1#
    • 1...Qf8
      • 2.Qg1#
    • 1...Qh8
      • 2.Qg1#
    • 1...Bd5
      • 2.Ba7#
    • 1...Sd5
      • 2.Sbc6#
      • 2.Sdc6#
    • 1...Sg6
      • 2.Qg1#
    • 1...d2
      • 2.Qc3#
  • Tries
    • 1.Se6+?
      • 1...Qxe6
        • 2.Qg1#
      • 1...Rxe6!
    • 1.Rd7+?
      • 1...Qd5
        • 2.Ba7#
        • 2.Qg1#
      • 1...Bd5
        • 2.Ba7#
      • 1...Sd5
        • 2.Sbc6#
        • 2.Sdc6#
        • 2.Ba7#
      • 1...Rd5!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qc4#
      • 1...Kxd5
        • 2.Rd7#
        • 2.Qc4#
      • 1...Qxd5
        • 2.Qg1#
      • 1...Rxd5
        • 2.Rb4#
      • 1...Bxd5
        • 2.Ba7#
      • 1...Sxd5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • Q(g);N_GUARD::QAB(A)
    • Q(g);N_GUARD,N_PINP(D)::QAB(A)
    • Q(g);N_GUARD,N_PINP(D)::QAB(A),XQ(g)
    • Q(g);N_GUARD,N_PINP(D),XS(I)::QAB(A)
    • B(c);S_CUTR(d)::B(H)
    • S(f);S_CUTQ(g)::QAB(A)
    • P(a);::QAB1(A)
  • Tries
    • Try
      • S(I);CHECK,N_SPINP(D)
      • Vars
        • Q(g);P_PINP(D),XS(I)::QAB(A)
      • Refutation
        • R(d);XS(I)
    • Try
      • R(G);CHECK
      • Vars
        • B(c);P_SPINB(c)::B(H)
      • Refutation
        • R(d);N_PINP(D),P_SPINR(d)
  • Actual
    • S(F);N_SPINP(D)
    • Threat
      • QAR1(A)
    • Vars
      • Q(g);N_GUARD,P_PINP(D),SBLOCK,XS(F)::QAB(A)
      • R(d);SBLOCK,XS(F)::R(G)
      • B(c);P_PINP(D),SBLOCK,XS(F)::B(H)
      • S(f);N_GUARD,SBLOCK,XS(F)::S(I)
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