MESON Chess Problem Database

Problem Display
PID: 101199 (3R4/8/2pqP3/Q3rn2/2pkPNR1/2N4p/5P1K/3rBB2 w - - 0 1)

Rothstein, Louis

Good Companions (October), 1918

3R4/8/2pqP3/Q3rn2/2pkPNR1/2N4p/5P1K/3rBB2

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sfe2#
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qxe5#
      • 1...Rxe4+
        • 2.Qe5#
      • 1...Rxa5+
        • 2.e5#
      • 1...Rb5+
        • 2.e5#
      • 1...Rc5+
        • 2.e5#
      • 1...Rd5+
        • 2.e5#
      • 1...Rxe6+
        • 2.e5#
      • 1...Rxd3
        • 2.Se2#
      • 1...cxd3
        • 2.Qb4#
      • 1...Qd5
        • 2.Qc5#
      • 1...c5
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK::S(G)
  • Actual
    • S(G);
    • Threat
      • QAB1(I),XR(e)
    • Vars
      • R(e);CHECK,P_SPINR(e),XP(F)::QAB1(I)
      • R(e);CHECK,OGATE,XQ(I)::R(H)+P(F)
      • R(e);CHECK,OGATE::R(H)+P(F)
      • R(e);CHECK,N_SPINQ(h),OGATE::R(H)+P(F)
      • R(e);CHECK,OGATE,XP(J)::R(H)+P(F)
      • R(a);SBLOCK,XS(G)::S(E)
      • P(c);OGATEB,XS(G)::QAR2(I)
      • Q(h);S_CUTR(e)::QAB1(I)
      • P(g);N_GUARD,S_CUTR(e)::S(E)
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