MESON Chess Problem Database

Problem Display
PID: 153490 (q2R4/1N6/2ppQ3/1Pr2P1K/1P1kb3/1r3p2/2pP1P2/n3N3 w - - 0 1)

Betts, Frederick Charles

Fraternity Saturday, 1918

q2R4/1N6/2ppQ3/1Pr2P1K/1P1kb3/1r3p2/2pP1P2/n3N3

#2

10 + 10

15351 SCPF/BCPS Black Books 2014
3713 Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.fxe3#
    • 1...Bd3
      • 2.Sxf3#
  • Tries
    • 1.Qxd6+?
      • 1...Kc4
        • 2.Qxc5#
      • 1...Bd5
        • 2.Qf4#
      • 1...Rd5!
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Qxe4#
      • 1...Rxf5+
        • 2.Sxf5#
      • 1...Bxf5
        • 2.Sxf5#
      • 1...cxb5
        • 2.Sxb5#
      • 1...Re3
        • 2.fxe3#
      • 1...Re5
        • 2.Qc4#
      • 1...Bd3
        • 2.Sxf3#
      • 1...Bd5
        • 2.Qf6#

Anticipated by 141403(1882)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE::P(C),XR(c)
    • B(f);N_GUARD,SBLOCK,S_CUTR(c)::S(A),XP(d)
  • Tries
    • Try
      • Q(H);CHECK,XP(i)
      • Vars
        • K(e);P-FLIGHT::QAR1(H),XR(g)
        • B(f);N_PINP(F),P_SPINB(f),S_CUTQ(j),S_CUTR(g)::QAR2(H)
      • Refutation
        • R(g);P_SPINR(g)
  • Actual
    • S(I);XP(i)
    • Threat
      • QAR1(H),XB(f)
    • Vars
      • R(g);CHECK,XP(F)::R(J)+S(I),DCHECK,XR(g)
      • B(f);XP(F)::R(J)+S(I),DCHECK,XB(f)
      • P(h);XP(E)::R(J)+S(I),DCHECK,XP(h)
      • R(c);OGATE::P(C),XR(c)
      • R(g);N_GUARD,SBLOCK::QAR1(H)
      • B(f);N_GUARD,SBLOCK,S_CUTR(c)::S(A),XP(d)
      • B(f);N_PINP(F),SBLOCK,S_CUTR(g)::QAB(H)
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