MESON Chess Problem Database

Problem Display
PID: 142207 (2RN2Q1/2Bp3p/3P3P/5n2/P1Pk1NR1/K2p4/3p4/3B4 w - - 0 1)

Meyer, Heinrich Friedrich Ludwig

English Mechanic and World of Science, 1886

2RN2Q1/2Bp3p/3P3P/5n2/P1Pk1NR1/K2p4/3p4/3B4

#2

12 + 6

153 La Strategie 1910
15 British Chess Magazine 1911
14868 Pirnie Collection 2011
3713 Snap 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Sd5#
    • 1...Kc5
      • 2.Sxd3#
      • 2.Qd5#
  • Tries
    • 1.Sg2+?
      • 1...Kc3
        • 2.Ba5#
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5!
    • 1.Sh3+?
      • 1...Kc3
        • 2.Ba5#
      • 1...Ke3
        • 2.Qg5#
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5!
    • 1.Sd5+?
      • 1...Kc5
        • 2.Bb8#
      • 1...Ke5!
    • 1.Sh5+?
      • 1...Kc3
        • 2.Ba5#
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Ke3!
    • 1.Sg6+?
      • 1...Kc3
        • 2.Ba5#
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke3!
    • 1.Bb6+?
      • 1...Kc3
        • 2.Sd5#
      • 1...Ke4
        • 2.Sg6#
        • 2.Qd5#
      • 1...Ke5!
    • 1.Qd5+?
      • 1...Kc3
        • 2.Ba5#
        • 2.Qxd3#
      • 1...Ke3!
  • Keys
    • 1.Qg5!
      • 1...Kc3
        • 2.Sd5#
      • 1...Ke3
        • 2.Sh3#
      • 1...Kxc4
        • 2.Bb6#
      • 1...Ke4
        • 2.Sg6#
      • 1...Kc5
        • 2.Sxd3#
      • 1...Ke5
        • 2.Sxd3#
      • 1...Sxd6
        • 2.Se2#
      • 1...Sxh6
        • 2.Se2#
      • 1...Se3
        • 2.Se2#
      • 1...Sg3
        • 2.Se2#
      • 1...Sh4
        • 2.Se2#
      • 1...Se7
        • 2.Se2#
      • 1...Sg7
        • 2.Se2#

Anticipated by 45016(1884)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT::B(I)
        • K(c);S_FLIGHT::QAR1(L)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT::B(I)
        • K(c);S_FLIGHT::QAB(L)
        • K(c);S_FLIGHT::QAR1(L)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT::R(J)+B(I)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT::B(I)
        • K(c);S_FLIGHT::QAR1(L)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT::B(I)
        • K(c);S_FLIGHT::QAR1(L)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(I);CHECK
      • Vars
        • K(c);S_FLIGHT::S(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(L);CHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(L);
    • Vars
      • K(c);S_FLIGHT::S(E)
      • K(c);S_FLIGHT::QAB(L)+S(E)
      • K(c);P-FLIGHT,XP(D)::R(J)+B(I)
      • K(c);P-FLIGHT::R(F)+S(E)
      • K(c);P_SPINS(d),S_FLIGHT::S(E),XP(b)
      • S(d);XP(G)::R(F)+S(E),DCHECK
      • S(d);XP(H)::R(F)+S(E),DCHECK
      • S(d);::R(F)+S(E),DCHECK
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