MESON Chess Problem Database

Problem Display
PID: 53338 (8/8/7N/4pPQ1/2P1k3/4P2q/2P2KPp/7N w - - 0 1)

Wenzl, Charles C

The Chess Review, 1933

8/8/7N/4pPQ1/2P1k3/4P2q/2P2KPp/7N

#2

9 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg2+
      • 2.Qxg2#
    • 1...Qg4
      • 2.Qxg4#
    • 1...Qxf5+
      • 2.Qxf5#
    • 1...Qxe3+
      • 2.Qxe3#
    • 1...Qf3+
      • 2.gxf3#
    • 1...Qg3+
      • 2.Sxg3#
    • 1...Qh4+
      • 2.Qxh4#
    • 1...Qh5
      • 2.Sg3#
    • 1...Qxh6
      • 2.Sg3#
  • Tries
    • 1.Ke2?
      • threat
        • 2.Sf2#
      • 1...Qxg2+
        • 2.Qxg2#
      • 1...Qg4+
        • 2.Qxg4#
      • 1...Qxe3+
        • 2.Qxe3#
      • 1...Qf3+
        • 2.gxf3#
      • 1...Qxf5
        • 2.Sg3#
        • 2.Qxf5#
      • 1...Qg3
        • 2.Sxg3#
      • 1...Qh4
        • 2.Qxh4#
      • 1...Qh5+!
    • 1.Qh4+?
      • 1...Qg4
        • 2.Sg3#
        • 2.Qxg4#
      • 1...Qxh4+!
  • Keys
    • 1.f6!
      • 1...Qxg2+
        • 2.Qxg2#
      • 1...Qf5+
        • 2.Qxf5#
      • 1...Qxe3+
        • 2.Qxe3#
      • 1...Qf3+
        • 2.gxf3#
      • 1...Qg3+
        • 2.Sxg3#
      • 1...Qh4+
        • 2.Qxh4#
      • 1...Qxh6
        • 2.Sg3#
      • 1...Qg4
        • 2.Qxg4#
      • 1...Qe6
        • 2.Sg3#
      • 1...Qd7
        • 2.Sg3#
      • 1...Qc8
        • 2.Sg3#
      • 1...Qh5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,OGATE,XP(D)::QAB(H),XQ(b)
    • Q(b);N_GUARD::QAR2(H),XQ(b)
    • Q(b);CHECK,OGATE,XP(G)::QAB1(H),XQ(b)
    • Q(b);CHECK,OGATE,XP(E)::QAR1(H),XQ(b)
    • Q(b);CHECK,OGATE::P(D),XQ(b)
    • Q(b);CHECK,N_GUARD::S(A),XQ(b)
    • Q(b);CHECK,N_GUARD::QAR(H),XQ(b)
    • Q(b);N_GUARD::S(A)
    • Q(b);N_GUARD,XS(I)::S(A)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • S(A)
      • Vars
        • Q(b);CHECK,OGATE,XP(D)::QAB(H),XQ(b)
        • Q(b);CHECK,N_GUARD::QAR2(H),XQ(b)
        • Q(b);CHECK,OGATE,XP(E)::QAR1(H),XQ(b)
        • Q(b);CHECK,OGATE::P(D),XQ(b)
        • Q(b);N_GUARD::S(A),XQ(b)
        • Q(b);N_GUARD::QAR(H),XQ(b)
      • Refutation
        • Q(b);CHECK
    • Try
      • Q(H);CHECK
      • Refutation
        • Q(b);CHECK,XQ(H)
  • Actual
    • P(G);
    • Vars
      • Q(b);CHECK,OGATE,XP(D)::QAB(H),XQ(b)
      • Q(b);CHECK,N_GUARD::QAB1(H),XQ(b)
      • Q(b);CHECK,OGATE,XP(E)::QAR1(H),XQ(b)
      • Q(b);CHECK,OGATE::P(D),XQ(b)
      • Q(b);CHECK,N_GUARD::S(A),XQ(b)
      • Q(b);CHECK,N_GUARD::QAR(H),XQ(b)
      • Q(b);N_GUARD,XS(I)::S(A)
      • Q(b);N_GUARD::QAR2(H),XQ(b)
      • Q(b);N_GUARD::S(A)
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