MESON Chess Problem Database

Problem Display
PID: 63994 (2r5/4NbpQ/1R5p/1P4P1/1rk4q/1p2B1p1/Nn6/2KR3n w - - 0 1)

Thompson, Walter Hood

Source?, 1907

2r5/4NbpQ/1R5p/1P4P1/1rk4q/1p2B1p1/Nn6/2KR3n

#2

9 + 11

16 Chess Amateur (The) 1910

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg5
      • 2.Qe4#
    • 1...Qh2
      • 2.Qe4#
    • 1...Qh3
      • 2.Qe4#
    • 1...Qe4
      • 2.Qxe4#
    • 1...Qh5
      • 2.Qe4#
    • 1...Sd3+
      • 2.Qxd3#
    • 1...Sa4
      • 2.Qd3#
    • 1...bxa2
      • 2.Qc2#
    • 1...g6
      • 2.Qxf7#
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qxc8#
        • 2.Qxf7#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Qxg5
        • 2.Rd4#
        • 2.Qe4#
      • 1...Rxb5
        • 2.Qxb5#
      • 1...Sxd1
        • 2.Qf1#
      • 1...bxa2
        • 2.Qc2#
      • 1...Qh3
        • 2.Rd4#
        • 2.Qe4#
        • 2.Qf4#
      • 1...Qd4
        • 2.Rxd4#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qf4
        • 2.Qxf4#
      • 1...Qg4
        • 2.Qxg4#
      • 1...Qh5
        • 2.Rd4#
        • 2.Qe4#
        • 2.Qxc8#
        • 2.Qf4#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Rc6
        • 2.Rxc6#
      • 1...Rc7
        • 2.Qxf7#
      • 1...Ra8
        • 2.Rc6#
        • 2.Qc5#
        • 2.Qxf7#
      • 1...Rb8
        • 2.Rc6#
        • 2.Qc5#
        • 2.Qxf7#
      • 1...Rd8
        • 2.Rc6#
        • 2.Qc5#
      • 1...Re8
        • 2.Rc6#
        • 2.Qc5#
        • 2.Qxf7#
      • 1...Rf8
        • 2.Rc6#
        • 2.Qc5#
      • 1...Rg8
        • 2.Rc6#
        • 2.Qc5#
        • 2.Qxf7#
      • 1...Rh8
        • 2.Rc6#
        • 2.Qc5#
        • 2.Qxf7#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bh5
        • 2.Qe6#
        • 2.Qxc8#
        • 2.Qd5#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bg6
        • 2.Qe6#
        • 2.Qxc8#
        • 2.Qd5#
      • 1...Be8
        • 2.Qe6#
        • 2.Qd5#
      • 1...Bg8
        • 2.Qxc8#
      • 1...Sa4
        • 2.Qd3#
        • 2.Qf1#
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 6
  • Sets
    • Q(g);N_GUARD,P_PINB(D),XP(F)::QAR2(I)
    • Q(g);N_GUARD::QAR2(I)
    • Q(g);N_GUARD::QAR2(I),XQ(g)
    • S(b);CHECK,N_GUARD::QAB1(I),XS(b)
    • S(b);N_GUARD::QAB1(I)
    • P(c);N_GUARD,XS(C)::QAR2(I)
    • P(j);OGATE::QAB(I),XB(i)
  • Actual
    • Q(I);
    • Threat
      • DUALS(2)
    • Vars
      • S(b);CHECK,N_GUARD::QAB1(I),XS(b)
      • R(e);OGATE,XP(E)::QAB1(I),XR(e)
      • S(b);N_GUARD,XR(B)::QAB(I)
      • P(c);N_GUARD,XS(C)::QAR2(I)
      • Q(g);N_GUARD::R1(B),XQ(g)
      • Q(g);N_GUARD::QAR2(I),XQ(g)
      • Q(g);N_GUARD,P_PINB(D)::QAR(I),XQ(g)
      • Q(g);N_GUARD::QAR(I),XQ(g)
      • R(k);N_GUARD::QAR1(I),XR(k)
      • R(k);N_GUARD::R(G),XR(k)
      • R(k);::QAB(I),XB(i)
      • B(i);N_GUARD::QAB1(I),XB(i)
      • B(i);N_GUARD::QAB(I),XB(i)
      • B(i);::QAR(I),XR(k)
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