MESON Chess Problem Database

Problem Display
PID: 101134 (7R/8/6n1/4BrP1/7n/7p/4Qp2/R4K1k w - - 0 1)

Mendes de Moraes Filho, Feliciano

Good Companions, 1922

7R/8/6n1/4BrP1/7n/7p/4Qp2/R4K1k

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Rxh3#
  • Tries
    • 1.Qe4+?
      • 1...Sg2
        • 2.Rxh3#
        • 2.Qxg2#
      • 1...Sf3
        • 2.Kxf2#
        • 2.Rxh3#
      • 1...Rf3!
  • Keys
    • 1.Qxf2!
      • threat
        • 2.Ke2#
      • 1...Rxf2+
        • 2.Kxf2#
      • 1...Rxe5
        • 2.Qg1#
      • 1...Rxg5
        • 2.Qh2#
      • 1...Sg2
        • 2.Rxh3#
      • 1...Sf3
        • 2.Qg2#
      • 1...Sf4
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(d);OGATE,P_SPINP(c)::R(F),XP(c)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • R(e);P_SPINR(e)
  • Actual
    • Q(C);P_SPINQ(C),XP(b)
    • Threat
      • R(A)+K(B)
    • Vars
      • R(e);CHECK,XQ(C)::R(A)+K(B),XR(e)
      • R(e);N_PINQ(C),XB(D)::QAR1(C)
      • R(e);N_PINQ(C),XP(E)::QAR1(C)
      • S(d);OGATE,P_SPINP(c)::R(F),XP(c)
      • S(d);N_PINQ(C),P_SPINP(c)::QAB1(C)
      • S(f);N_PINQ(C)::QAR1(C)
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