MESON Chess Problem Database

Problem Display
PID: 194030 (2b4b/p2r4/3PQp1R/ppk5/3N4/pp5K/5B2/8 w - - 0 1)

Clark, WA

4th Prize, L'Eco degli Scacchi, 1917

2b4b/p2r4/3PQp1R/ppk5/3N4/pp5K/5B2/8

#2

6 + 10

5454 Near Snap 2019
6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Se2+?
      • 1...Kb4
        • 2.Rh4#
        • 2.Qg4#
        • 2.Qe4#
      • 1...Kc6!
    • 1.Sxb3+?
      • 1...Kc6
        • 2.Sxa5#
      • 1...Kb4!
    • 1.Sf5+?
      • 1...Kc6
        • 2.Qe4#
      • 1...Kb4!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Sf5#
      • 1...Rxd6+
        • 2.Se6#
      • 1...Kb4
        • 2.Se2#
      • 1...Kc4
        • 2.Se2#
      • 1...Kb6
        • 2.Qc6#
      • 1...Kxd6
        • 2.Sxb5#
      • 1...b4
        • 2.Qc6#
      • 1...f5
        • 2.Sxb3#

This anticipates 143902(1926)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • S(C);CHECK,XP(b)
      • Vars
        • K(e);P-FLIGHT::S(C),XP(c)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT::QAB(E)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • B(A)+S(C)
    • Vars
      • R(h);CHECK,SBLOCK,XP(D)::B(A)+S(C),DCHECK
      • K(e);S_FLIGHT::QAR(E)+S(C)
      • K(e);P-FLIGHT::QAR(E)+S(C)
      • K(e);S_FLIGHT::QAR1(E)
      • K(e);P_SPINP(f),S_FLIGHT,XP(D)::S(C),XP(d)
      • P(d);SBLOCK::QAR1(E)
      • P(f);::B(A)+S(C),DCHECK,XP(b)
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