MESON Chess Problem Database

Problem Display
PID: 30442 (3B4/p3R3/Qq3k1p/3p3P/6P1/Rb5N/2p2N2/n1K5 w - - 0 1)

Altman, Ernst

Western Daily Mercury, 1912

3B4/p3R3/Qq3k1p/3p3P/6P1/Rb5N/2p2N2/n1K5

#2

9 + 8

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa6
      • 2.Rxa6#
    • 1...Qc6
      • 2.Qxc6#
    • 1...Qd6
      • 2.Qxd6#
    • 1...Qe6
      • 2.Qxe6#
    • 1...Ba2
      • 2.Rf3#
    • 1...Ba4
      • 2.Rf3#
    • 1...Bc4
      • 2.Rf3#
    • 1...d4
      • 2.Se4#
  • Tries
    • 1.Rxb3?
      • threat
        • 2.Rf3#
      • 1...Qe6
        • 2.Qxe6#
      • 1...Sxb3+!
    • 1.Qc8?
      • threat
        • 2.Qf5#
      • 1...Qxf2
        • 2.Qe6#
        • 2.Qc6#
      • 1...Qxd8
        • 2.Qe6#
      • 1...Qe6
        • 2.Qxe6#
      • 1...Qe3+!
    • 1.g5+?
      • 1...Kf5
        • 2.Qd3#
      • 1...hxg5!
  • Keys
    • 1.Sh1!
      • 1...Qxa6
        • 2.Rxa6#
      • 1...Qe6
        • 2.Qxe6#
      • 1...Qc6
        • 2.Qf1#
        • 2.Qxc6#
      • 1...Qd6
        • 2.Qxd6#
      • 1...Ba2
        • 2.Rf3#
      • 1...Ba4
        • 2.Rf3#
      • 1...Bc4
        • 2.Rf3#
      • 1...d4
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • Q(e);N_SPINQ(e),OGATE,XQ(G)::R(C),XQ(e)
    • Q(e);OGATE::QAR(G),XQ(e)
    • Q(e);OGATE::QAR2(G),XQ(e)
    • Q(e);OGATE::QAR1(G),XQ(e)
    • B(c);OGATE::R(C)
    • P(d);N_GUARD::S(B)
  • Tries
    • Try
      • R(C);XB(c)
      • Threat
        • R(C)
      • Vars
        • Q(e);OGATE::QAR1(G),XQ(e)
      • Refutation
        • S(a);CHECK,XR(C)
    • Try
      • Q(G);N_PINQ(e)
      • Threat
        • QAR1(G)
      • Vars
        • Q(e);N_GUARD,XB(I)::QAR1(G)
        • Q(e);N_GUARD::QAR1(G),XQ(e)
      • Refutation
        • Q(e);CHECK
    • Try
      • P(E);CHECK
      • Vars
        • K(f);N_SPINQ(e),P-FLIGHT::QAB(G)
      • Refutation
        • P(g);XP(E)
  • Actual
    • S(B);
    • Vars
      • Q(e);N_SPINQ(e),OGATE,XQ(G)::R(C),XQ(e)
      • Q(e);OGATE::QAR1(G),XQ(e)
      • Q(e);OGATE::QAR2(G),XQ(e)
      • B(c);OGATE::R(C)
      • P(d);::QAR(G)
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