MESON Chess Problem Database

Problem Display
PID: 9656 (1n1n1K2/2B4p/R7/1pPk3r/6Q1/1P6/2R3b1/3rb3 w - - 0 1)

Marble, Murray

La Strategie, 1907

1n1n1K2/2B4p/R7/1pPk3r/6Q1/1P6/2R3b1/3rb3

#2

7 + 9

3360 Simple Two-move Themes 1924
887 Mate in Two Moves 1931
81 Chess 1952
5064 100 Years of the American Two-move Chess Problem 1962

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rd6#
    • 1...b4
      • 2.Qc4#
  • Keys
    • 1.Rc4!
      • threat
        • 2.Qxh5#
        • 2.Qxg2#
      • 1...Rf5+
        • 2.Qxf5#
      • 1...Sd7+
        • 2.Qxd7#
      • 1...Se6+
        • 2.Qxe6#
      • 1...Sxa6
        • 2.Qd7#
      • 1...bxc4
        • 2.Qxc4#
      • 1...Rd2
        • 2.Qxh5#
      • 1...Rd3
        • 2.Qxh5#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Rh1
        • 2.Qf5#
        • 2.Qxg2#
        • 2.Qg5#
      • 1...Rh2
        • 2.Qf5#
        • 2.Qg5#
      • 1...Rh3
        • 2.Qf5#
        • 2.Qg5#
      • 1...Rh4
        • 2.Qf5#
        • 2.Qg5#
      • 1...Re5
        • 2.Rd6#
      • 1...Rg5
        • 2.Qxg5#
      • 1...Rh6
        • 2.Qf5#
        • 2.Qxg2#
        • 2.Qg5#
      • 1...Bd2
        • 2.Qxg2#
        • 2.Qd4#
      • 1...Bc3
        • 2.Qxg2#
      • 1...Bg3
        • 2.Qxd1#
      • 1...Bh4
        • 2.Qxd1#
        • 2.Qxg2#
      • 1...Bf1
        • 2.Qf3#
        • 2.Qxh5#
        • 2.Qe4#
      • 1...Bh1
        • 2.Qxh5#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Bh3
        • 2.Qf3#
        • 2.Qe4#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sbc6
        • 2.Qd7#
      • 1...Sdc6
        • 2.Qg8#
      • 1...Sf7
        • 2.Qe6#
        • 2.Qxg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 16
    • REMOVED MATES = 1
  • Sets
    • R(f);SBLOCK::R1(E)
    • P(d);N_GUARD::QAB1(C)
  • Actual
    • R(A);
    • Threat
      • DUALS(2)
    • Vars
      • R(f);CHECK,N_GUARD::QAR2(C),XR(f)
      • S(h);CHECK,N_GUARD::QAR2(C),XS(h)
      • S(i);CHECK,N_GUARD::QAB1(C),XS(i)
      • S(h);N_GUARD,XR(E)::QAR2(C)
      • P(d);OGATE,XR(A)::QAB1(C),XP(d)
      • R(a);::QAR(C),XR(f)
      • R(a);N_GUARD::QAR1(C),XR(a)
      • R(f);SBLOCK::R1(E)
      • R(f);N_GUARD::QAR(C),XR(f)
      • B(b);::QAB(C),XB(c)
      • B(b);N_GUARD::QAR(C),XR(a)
      • B(c);::QAR(C),XR(f)
      • B(c);N_GUARD::QAB(C),XB(c)
      • B(c);N_GUARD::QAB1(C),XB(c)
      • S(h);N_GUARD::QAR2(C)
      • S(i);N_GUARD::QAB(C)
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