MESON Chess Problem Database

Problem Display
PID: 261571 (n2KN3/5p2/1p1N4/1P1k1pR1/3q1R2/Q4P1B/7b/B2r4 w - - 0 1)

Fontana, Robert

Neue Zurcher Zeitung, 1948

n2KN3/5p2/1p1N4/1P1k1pR1/3q1R2/Q4P1B/7b/B2r4

#2

10 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sc7+?
      • 1...Ke5
        • 2.Rfxf5#
        • 2.Rgxf5#
      • 1...Sxc7!
    • 1.Rgxf5+?
      • 1...Qe5
        • 2.Rxe5#
      • 1...Ke6!
    • 1.Qa2+?
      • 1...Ke5
        • 2.Re4#
        • 2.Rfxf5#
        • 2.Rgxf5#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Kc5!
    • 1.Qb3+?
      • 1...Ke5
        • 2.Re4#
        • 2.Rfxf5#
        • 2.Rgxf5#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Kc5!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Se3#
      • 1...Kc4+
        • 2.Sfd6#
      • 1...Ke5+
        • 2.Qd6#
      • 1...Ke6+
        • 2.Sxd4#
      • 1...Qf6+
        • 2.Se7#
      • 1...Qe3
        • 2.Sxe3#
        • 2.Se7#
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(J);CHECK
      • Refutation
        • S(h);XS(J)
    • Try
      • R(G);CHECK,XP(e)
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::R1(G),XQ(c)
      • Refutation
        • K(d);P_PINS(H),S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAB1(B),XQ(c)
      • Refutation
        • K(d);P-FLIGHT,P_PINS(H)
    • Try
      • Q(B);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAB1(B),XQ(c)
      • Refutation
        • K(d);P-FLIGHT,P_PINS(H)
  • Actual
    • S(H);XP(e)
    • Threat
      • R(G)+S(H),DCHECK
    • Vars
      • K(d);CHECK,P_SPINQ(c),S_CUTP(g),S_FLIGHT::S(H)
      • K(d);CHECK,N_GUARD,P-FLIGHT,P_SPINQ(c)::QAB1(B)
      • K(d);CHECK,N_GUARD,S_FLIGHT::B(D)+S(H),DCHECK,XQ(c)
      • Q(c);CHECK::R(G)+S(H),DCHECK
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