MESON Chess Problem Database

Problem Display
PID: 19057 (2rb4/3rp3/n5QK/2NkP1R1/3N4/1PP5/8/8 w - - 0 1)

Daniel, Arthur William

2nd Place, Western Daily Mercury, 1911

2rb4/3rp3/n5QK/2NkP1R1/3N4/1PP5/8/8

#2

8 + 6

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.e6#
    • 1...Rc6
      • 2.Qxc6#
    • 1...Ra8
      • 2.Qc6#
    • 1...Rb8
      • 2.Qc6#
    • 1...Bc7
      • 2.Qc6#
    • 1...Sc7
      • 2.Qc6#
  • Tries
    • 1.Sde6?
      • threat
        • 2.Qe4#
      • 1...Rxc5
        • 2.Sf4#
      • 1...Sxc5
        • 2.Sf4#
      • 1...Kc6!
    • 1.Qxa6?
      • threat
        • 2.Qc4#
        • 2.e6#
      • 1...Rd6+
        • 2.e6#
      • 1...Rc6+
        • 2.Qxc6#
      • 1...Kxc5
        • 2.Qb5#
      • 1...Bb6
        • 2.Qc4#
      • 1...Bc7
        • 2.Qc4#
        • 2.Qc6#
      • 1...e6
        • 2.Qc4#
      • 1...Rxc5!
    • 1.Qd6+?
      • 1...Rxd6+
        • 2.e6#
      • 1...exd6!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qc4#
      • 1...Rd6+
        • 2.e6#
      • 1...Rc6+
        • 2.Sde6#
      • 1...Kxc5
        • 2.Qb5#
      • 1...Rxc5
        • 2.Qf3#
      • 1...Sxc5
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(c);P_PINQ(G),SBLOCK::R(F)+P(E)
    • R(e);N_GUARD,P_PINQ(G)::QAB1(G),XR(e)
    • R(e);N_GUARD::QAB1(G)
    • B(f);S_CUTR(e)::QAB1(G)
    • S(b);S_CUTR(e)::QAB1(G)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(G)
      • Vars
        • R(e);SBLOCK,XS(D)::S(C)
        • S(b);SBLOCK,XS(D)::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);CHECK::R(F)+P(E)
        • R(e);CHECK,N_GUARD::QAB1(G),XR(e)
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(G)
        • B(f);::QAB1(G)
        • P(d);::QAB1(G)
      • Refutation
        • R(e);XS(D)
    • Try
      • Q(G);CHECK
      • Vars
        • R(c);CHECK,SBLOCK,XQ(G)::R(F)+P(E)
      • Refutation
        • P(d);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • R(c);CHECK,SBLOCK::R(F)+P(E)
      • R(e);CHECK,SBLOCK::QAR(G)+S(C)
      • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(G)
      • R(e);SBLOCK,XS(D)::QAB(G)
      • S(b);SBLOCK,XS(D)::P(B)
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