MESON Chess Problem Database

Problem Display
PID: 58353 (rk6/pB3K2/b7/1N6/4Q3/2Bn4/5b2/1r6 w - - 0 1)

Reynish, JP

Chess, 1943

rk6/pB3K2/b7/1N6/4Q3/2Bn4/5b2/1r6

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Be5#
    • 1...Se1
      • 2.Be5#
    • 1...Sb2
      • 2.Be5#
    • 1...Sb4
      • 2.Be5#
    • 1...Sf4
      • 2.Be5#
    • 1...Sc5
      • 2.Be5#
    • 1...Se5+
      • 2.Bxe5#
  • Tries
    • 1.Bxa6?
      • threat
        • 2.Qb7#
        • 2.Qe8#
      • 1...Se5+
        • 2.Bxe5#
        • 2.Qxe5#
      • 1...Re1
        • 2.Qb7#
      • 1...Bh4
        • 2.Qb7#
      • 1...Bb6
        • 2.Qb7#
      • 1...Sc5
        • 2.Be5#
        • 2.Qf4#
        • 2.Qe5#
        • 2.Qe8#
      • 1...Rxb5!
    • 1.Qe5+?
      • 1...Kxb7
        • 2.Qc7#
      • 1...Sxe5+!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qc7#
        • 2.Qc8#
      • 1...Se5+
        • 2.Bxe5#
      • 1...Rxb5
        • 2.Qc8#
      • 1...Bxb5
        • 2.Qc8#
      • 1...Bxb7
        • 2.Qc7#
      • 1...Bg3
        • 2.Qc8#
      • 1...Bb6
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • S(c);N_GUARD::B(A)
    • S(c);CHECK,N_GUARD::B(A),XS(c)
  • Tries
    • Try
      • B(D);XB(d)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAR1(B)
        • B(b);::QAR1(B)
      • Refutation
        • R(a);XS(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(g);P-FLIGHT,XB(D)::QAR1(B)
      • Refutation
        • S(c);CHECK,XQ(B)
  • Actual
    • Q(B);
    • Threat
      • DUALS(2)
    • Vars
      • S(c);CHECK,N_GUARD::B(A),XS(c)
      • R(a);XS(C)::QAR1(B)
      • B(d);XS(C)::QAR1(B)
      • B(d);XB(D)::QAB1(B)
      • B(b);::QAR1(B)
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