MESON Chess Problem Database

Problem Display
PID: 205122 (2n3N1/2p4p/r1Pk3r/1R1B3b/4p1PQ/n3N2p/7b/2KR4 w - - 0 1)

Dobbs, Gilbert S

American Chess Bulletin, 1912

2n3N1/2p4p/r1Pk3r/1R1B3b/4p1PQ/n3N2p/7b/2KR4

#2

9 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6+
      • 2.Bc4#
    • 1...Re6
      • 2.Bxe4#
    • 1...Rf6
      • 2.Qxf6#
    • 1...Bg1
      • 2.Qg3#
    • 1...Bg3
      • 2.Qxg3#
    • 1...Be5
      • 2.Sf5#
      • 2.Qd8#
    • 1...Bg6
      • 2.Qf6#
    • 1...Sb1
      • 2.Sc4#
    • 1...Sc2
      • 2.Sc4#
    • 1...Sc4
      • 2.Sxc4#
    • 1...Sb6
      • 2.Qe7#
    • 1...Sa7
      • 2.Qe7#
    • 1...Se7
      • 2.Qxe7#
  • Tries
    • 1.Be6+?
      • 1...Kxc6
        • 2.Bd7#
      • 1...Kxe6!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qxh2#
      • 1...Rxc6+
        • 2.Bc4#
      • 1...Ke5
        • 2.Qxh2#
      • 1...Sxb5
        • 2.Sc4#
      • 1...Re6
        • 2.Bxe4#
      • 1...Rf6
        • 2.Qxf6#
      • 1...Bg1
        • 2.Qg3#
        • 2.Qf4#
      • 1...Bg3
        • 2.Qxg3#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Be5
        • 2.Sf5#
      • 1...Sc4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(f);CHECK,SBLOCK,XP(H)::R(B)+B(G)
    • R(h);SBLOCK::R(B)+B(G),XP(d)
    • R(h);N_GUARD::QAR2(E),XR(h)
    • B(a);N_GUARD::QAB(E)
    • B(a);N_GUARD::QAB(E),XB(a)
    • B(e);S_CUTR(h)::QAR2(E)
    • S(b);N_GUARD::S(C)
    • S(b);N_GUARD::S(C),XS(b)
    • S(k);N_GUARD::QAB1(E)
    • S(k);N_GUARD::QAB1(E),XS(k)
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • K(g);P-FLIGHT,XP(H)::B(G)
      • Refutation
        • K(g);P-FLIGHT,XB(G)
  • Actual
    • Q(E);
    • Threat
      • QAB(E),XB(a)
    • Vars
      • R(f);CHECK,SBLOCK,XP(H)::R(B)+B(G)
      • K(g);S_FLIGHT::QAB(E),XB(a)
      • S(b);N_GUARD,XR(F)::S(C)
      • R(h);SBLOCK::R(B)+B(G),XP(d)
      • R(h);N_GUARD::QAR2(E),XR(h)
      • B(a);N_GUARD::QAB(E),XB(a)
      • B(a);N_GUARD,P_PINS(C)::QAB(E),XB(a)
      • B(a);SBLOCK::S(C)
      • S(b);N_GUARD::S(C),XS(b)
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