MESON Chess Problem Database

Problem Display
PID: 66550 (n7/2p2BR1/5b2/KP2Rr1p/3pq1rk/6p1/2nQP1pP/4N1N1 w - - 0 1)

Anonymous

The Chess Monthly (Hoffer), 1882

n7/2p2BR1/5b2/KP2Rr1p/3pq1rk/6p1/2nQP1pP/4N1N1

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Sxg2#
    • 1...Qe3
      • 2.Sxg2#
    • 1...Qf4
      • 2.Sxg2#
    • 1...Qxe5
      • 2.Sxg2#
    • 1...Rgf4
      • 2.hxg3#
    • 1...Rf1
      • 2.Rxh5#
    • 1...Rf2
      • 2.Rxh5#
    • 1...Rf3
      • 2.Sxg2#
      • 2.Rxh5#
    • 1...Rff4
      • 2.Rxh5#
  • Tries
    • 1.Sef3+?
      • 1...Rxf3
        • 2.Rxh5#
      • 1...Qxf3!
  • Keys
    • 1.Qf4!
      • threat
        • 2.hxg3#
      • 1...Qxf4
        • 2.Sxg2#
      • 1...Rfxf4
        • 2.Rxh5#
      • 1...gxh2
        • 2.Qxh2#
      • 1...Qd3
        • 2.Sxg2#
      • 1...Qf3
        • 2.Sexf3#
      • 1...Qe3
        • 2.Sxg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(e);N_GUARD::S(A),XP(b)
    • Q(e);N_GUARD,P_PINP(G),XR(H)::S(A),XP(b)
    • R(f);N_GUARD::P(E),XP(c)
    • R(h);OGATE::R1(H),XP(i)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • R(h);OGATE,XS(A)::R1(H),XP(i)
      • Refutation
        • Q(e);XS(A)
  • Actual
    • Q(C);P_PINR(f)
    • Threat
      • P(E),XP(c)
    • Vars
      • Q(e);N_GUARD,N_SPINR(f),XQ(C)::S(A),XP(b)
      • R(h);N_SPINR(f),OGATE,XQ(C)::R1(H),XP(i)
      • P(c);OGATE,XP(E)::QAR2(C),XP(c)
      • Q(e);N_GUARD::S(A),XP(b)
      • Q(e);N_GUARD::S(A),XQ(e)
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