MESON Chess Problem Database

Problem Display
PID: 21700 (6R1/K3Q3/p2PNn2/r3pk2/2N1n3/2pPRp1P/3p3B/5rq1 w - - 0 1)

Watney, Charles Gold

2nd Prize Set, 02. Mansfield Test - Good Companions (May), 1920

6R1/K3Q3/p2PNn2/r3pk2/2N1n3/2pPRp1P/3p3B/5rq1

#2

10 + 11

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe3+
      • 2.Sxe3#
    • 1...Sf2
      • 2.Rxf3#
    • 1...Sg3
      • 2.Rg5#
    • 1...Sc5
      • 2.Rxe5#
    • 1...Sxd6
      • 2.Sxd6#
    • 1...Sg4
      • 2.dxe4#
    • 1...Sd5
      • 2.dxe4#
    • 1...Sh5
      • 2.dxe4#
    • 1...Sd7
      • 2.dxe4#
    • 1...Sh7
      • 2.dxe4#
    • 1...Se8
      • 2.dxe4#
    • 1...f2
      • 2.Rf3#
  • Keys
    • 1.Qf7!
      • threat
        • 2.dxe4#
      • 1...Qxe3+
        • 2.Sxe3#
      • 1...Sxd6
        • 2.Sxd6#
      • 1...Qg4
        • 2.hxg4#
      • 1...Sf2
        • 2.Rxf3#
      • 1...Sg3
        • 2.Rg5#
      • 1...Sc5
        • 2.Rxe5#
      • 1...Sg5
        • 2.Sg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(b);CHECK,XR(C)::S(E),XQ(b)
    • S(f);N_PINR(C)::R(C),XP(e)
    • S(f);N_GUARD,S_CUTQ(b)::R1(J)
    • S(f);N_PINR(C)::R1(C),XP(h)
    • S(f);XP(F)::S(E),XS(f)
    • S(k);N_GUARD::P(B),XS(f)
    • P(e);N_PINR(C)::R(C)
  • Actual
    • Q(I);P_PINS(k)
    • Threat
      • P(B),XS(f)
    • Vars
      • Q(b);CHECK,XR(C)::S(E),XQ(b)
      • S(f);XP(F)::S(E),XS(f)
      • Q(b);N_PINR(C),OGATE::P(D),XQ(b)
      • S(f);N_PINR(C)::R(C),XP(e)
      • S(f);N_GUARD,S_CUTQ(b)::R1(J)
      • S(f);N_PINR(C)::R1(C),XP(h)
      • S(f);SBLOCK,S_CUTQ(b)::S(G)
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