MESON Chess Problem Database

Problem Display
PID: 221785 (3b4/B5nK/R2p4/2pk1P2/4R1N1/r3p2N/b1Q5/3n1r2 w - - 0 1)

Healey, Percy E

The Field, 1893

(First published on Sat Sep 2 1893)

3b4/B5nK/R2p4/2pk1P2/4R1N1/r3p2N/b1Q5/3n1r2

#2

8 + 10

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Sf4#
    • 1...Rg1
      • 2.Sf4#
    • 1...Rf4
      • 2.Sxf4#
    • 1...Rb3
      • 2.Qc4#
    • 1...Rd3
      • 2.Qxd3#
    • 1...Ra5
      • 2.Qd3#
    • 1...Bb1
      • 2.Qc4#
    • 1...Bb3
      • 2.Qd3#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Ba5
      • 2.Sf6#
    • 1...Bf6
      • 2.Sxf6#
    • 1...Bc7
      • 2.Sf6#
    • 1...Sf2
      • 2.Sf4#
    • 1...Sc3
      • 2.Sxe3#
      • 2.Qd3#
    • 1...c4
      • 2.Rd4#
  • Tries
    • 1.Rd4+?
      • 1...cxd4
        • 2.Qc6#
      • 1...Kxd4!
    • 1.Qa4?
      • threat
        • 2.Qc6#
      • 1...Bb6
        • 2.Sf6#
      • 1...Rxa4!
  • Keys
    • 1.Rb4!
      • threat
        • 2.Qe4#
      • 1...cxb4
        • 2.Qc6#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Rf4
        • 2.Sxf4#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Bb1
        • 2.Qc4#
      • 1...Sf2
        • 2.Sf4#
      • 1...Sc3
        • 2.Qd3#
      • 1...c4
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(b);N_GUARD::S(B)
    • R(b);N_GUARD::S(B),XR(b)
    • R(d);S_CUTB(c)::QAB1(A)
    • R(d);N_GUARD::QAR2(A),XR(d)
    • R(d);N_GUARD::QAR2(A)
    • B(c);N_GUARD::QAB1(A)
    • B(c);S_CUTR(d)::QAR2(A)
    • B(c);N_GUARD::QAB1(A),XB(c)
    • B(j);N_GUARD::S(D)
    • B(j);N_GUARD::S(D),XB(j)
    • S(a);S_CUTR(b)::S(B)
    • P(f);N_GUARD::R1(C)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • P(f);OGATE,XR(C)::QAB1(A)
      • Refutation
        • K(g);P-FLIGHT,P_SPINP(f),XR(C)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • B(j);N_GUARD::S(D)
      • Refutation
        • R(d);XQ(A)
  • Actual
    • R(C);
    • Threat
      • QAB1(A)
    • Vars
      • P(f);OGATE,XR(C)::QAB1(A)
      • B(c);N_GUARD::QAB1(A),XB(c)
      • R(b);N_GUARD::S(B),XR(b)
      • R(d);N_GUARD::QAR2(A),XR(d)
      • B(c);N_GUARD::QAB1(A)
      • S(a);S_CUTR(b)::S(B)
      • S(a);S_CUTR(d)::QAR2(A)
      • P(f);OGATEB::R(C)
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