MESON Chess Problem Database

Problem Display
PID: 101206 (8/4p1N1/1p1pP1pp/br1P2kb/1pQ2RN1/6P1/8/B2K4 w - - 0 1)

Rothstein, Louis

Good Companions, 1919

8/4p1N1/1p1pP1pp/br1P2kb/1pQ2RN1/6P1/8/B2K4

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5+
      • 2.Qxd5#
    • 1...Bxg4+
      • 2.Rxg4#
  • Keys
    • 1.Qc1!
      • threat
        • 2.Rxb4#
        • 2.Rc4#
        • 2.Rd4#
        • 2.Re4#
      • 1...Rxd5+
        • 2.Rd4#
      • 1...Bxg4+
        • 2.Rf3#
      • 1...Rc5
        • 2.Rc4#
      • 1...b3
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);CHECK,OGATE,XP(G)::QAR(D),XR(c)
    • B(e);CHECK,OGATE,XS(F)::R1(E),XB(e)
  • Actual
    • Q(D);
    • Threat
      • DUALS(4)
    • Vars
      • R(c);CHECK,XP(G)::QAB(D)+R(E)
      • B(e);CHECK,SBLOCK,XS(F)::QAB(D)+R(E)
      • R(c);::QAB(D)+R(E)
      • P(a);::QAB(D)+R(E)
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