MESON Chess Problem Database

Problem Display
PID: 195150 (8/4KN2/6B1/5NB1/Q3n1k1/2p3Pr/3pr1P1/8 w - - 0 1)

Rothstein, Louis

Densmore MT (Pittsburgh Gazette-Times), 1918

8/4KN2/6B1/5NB1/Q3n1k1/2p3Pr/3pr1P1/8

#2

8 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg2
      • 2.Qxe4#
    • 1...Rxg3
      • 2.S5h6#
  • Tries
    • 1.Be3?
      • threat
        • 2.Se5#
        • 2.Qxe4#
      • 1...Rf2
        • 2.Se5#
      • 1...Rh7
        • 2.Qxe4#
      • 1...Rxe3!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qxe2#
      • 1...Sxg3+
        • 2.Se3#
      • 1...Sxg5+
        • 2.Se5#
      • 1...Rxg3
        • 2.S5h6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD,XP(A)::QAR2(C),XS(e)
    • R(d);N_GUARD,SBLOCK,XP(B)::S(D)
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::S(H)
        • R(d);P_PINS(H)::QAR2(C),XS(e)
      • Refutation
        • R(b);XB(E)
  • Actual
    • Q(C);N_PINS(e),P_PINR(b)
    • Threat
      • QAB(C),XR(b)
    • Vars
      • S(e);CHECK,SBLOCK,XP(B)::S(D)
      • S(e);CHECK,SBLOCK,XB(E)::S(H)
      • R(d);N_GUARD,SBLOCK,XP(B)::S(D)
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