MESON Chess Problem Database

Problem Display
PID: 256907 (7B/p1p5/Pqpk1N2/Rb2R3/2prpPP1/2QpP3/3N1K2/8 w - - 0 1)

Nield, Joshua

Western Morning News, 1921

(First published on Sat Dec 10 1921)

7B/p1p5/Pqpk1N2/Rb2R3/2prpPP1/2QpP3/3N1K2/8

#2

11 + 10

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa5
      • 2.Qxd4#
    • 1...Qxa6
      • 2.Qxd4#
    • 1...Qb7
      • 2.Qxd4#
    • 1...Qb8
      • 2.Qxd4#
    • 1...Rd5
      • 2.Sdxe4#
  • Tries
    • 1.Bg7?
      • threat
        • 2.Bf8#
      • 1...Qb8
        • 2.Qxd4#
      • 1...c5!
    • 1.Re6+?
      • 1...Kc5
        • 2.Sb3#
        • 2.Qa3#
        • 2.exd4#
      • 1...Kxe6!
    • 1.Qb4+?
      • 1...Qc5
        • 2.Qxc5#
      • 1...c5!
    • 1.Qa3+?
      • 1...Qc5
        • 2.Qxc5#
      • 1...c5!
  • Keys
    • 1.f5!
      • 1...Kxe5
        • 2.Sxc4#
      • 1...Qxa5
        • 2.Qxd4#
      • 1...Qxa6
        • 2.Qxd4#
      • 1...Bxa6
        • 2.Re6#
      • 1...c5
        • 2.Re6#
      • 1...Qc5
        • 2.Re6#
      • 1...Qb7
        • 2.Qxd4#
      • 1...Qb8
        • 2.Qxd4#
      • 1...Rd5
        • 2.Sdxe4#
      • 1...Ba4
        • 2.Re6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(f);N_GUARD,XR(G)::QAR2(C),XR(c)
    • Q(f);N_GUARD,XP(I)::QAR2(C),XR(c)
    • Q(f);N_GUARD::QAR2(C),XR(c)
    • R(c);N_GUARD,P_PINP(D)::S(A),XP(d)
  • Tries
    • Try
      • B(K);
      • Threat
        • B(K)
      • Vars
        • Q(f);N_GUARD::QAR2(C),XR(c)
      • Refutation
        • P(g);
    • Try
      • R(H);CHECK
      • Refutation
        • K(h);P-FLIGHT,XR(H)
    • Try
      • Q(C);CHECK
      • Vars
        • Q(f);N_GUARD,P_SPINQ(f)::QAB1(C),XQ(f)
      • Refutation
        • P(g);P_SPINP(g)
    • Try
      • Q(C);CHECK
      • Vars
        • Q(f);N_GUARD,P_SPINQ(f)::QAB1(C),XQ(f)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • P(E);
    • Vars
      • K(h);P_SPINB(e),P_SPINR(c),S_FLIGHT,XR(H)::S(A),XP(b)
      • Q(f);N_GUARD,XR(G)::QAR2(C),XR(c)
      • Q(f);N_GUARD,XP(I)::QAR2(C),XR(c)
      • B(e);XP(I)::R1(H)
      • P(g);SBLOCK::R1(H)
      • Q(f);SBLOCK::R1(H)
      • Q(f);N_GUARD::QAR2(C),XR(c)
      • R(c);N_GUARD,P_PINP(D)::S(A),XP(d)
      • B(e);::R1(H)
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