MESON Chess Problem Database

Problem Display
PID: 258908 (6Q1/p1P1b3/2N2p2/Kn2p2r/1P3R2/p2k1B2/4RP2/Bnqr4 w - - 0 1)

Doney, J

Western Morning News, 1922

(First published on Sat Feb 25 1922)

6Q1/p1P1b3/2N2p2/Kn2p2r/1P3R2/p2k1B2/4RP2/Bnqr4

#2

10 + 11

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Qc4#
    • 1...Qd2
      • 2.Qc4#
    • 1...Qe3
      • 2.Qc4#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Bxb4+
      • 2.Sxb4#
    • 1...S1c3
      • 2.Qc4#
    • 1...S5c3
      • 2.Qc4#
    • 1...Sd6
      • 2.Qd5#
    • 1...f5
      • 2.Sxe5#
  • Tries
    • 1.Qb3+?
      • 1...S1c3
        • 2.Qc4#
      • 1...S5c3
        • 2.Qc4#
      • 1...Qc3!
    • 1.Qg6+?
      • 1...e4
        • 2.Qxe4#
      • 1...f5
        • 2.Sxe5#
      • 1...Rf5!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Be4#
      • 1...Bxb4+
        • 2.Sxb4#
      • 1...Qxf4
        • 2.Qc2#
      • 1...Qxc6
        • 2.Re3#
      • 1...Qb2
        • 2.Qc4#
      • 1...Qd2
        • 2.Qc4#
      • 1...Qe3
        • 2.Rxe3#
        • 2.Qc4#
        • 2.Qc2#
      • 1...Qc2
        • 2.Qxc2#
      • 1...Qc4
        • 2.Re3#
        • 2.Qxc4#
      • 1...Rd2
        • 2.Re3#
      • 1...Sd2
        • 2.Re3#
      • 1...S1c3
        • 2.Qc4#
      • 1...S5c3
        • 2.Qc4#
      • 1...Sd6
        • 2.Qd5#
      • 1...e4
        • 2.Bxe4#
      • 1...f5
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_GUARD::QAB1(J)
    • Q(b);N_GUARD,P_PINP(E)::QAB1(J)
    • Q(b);N_GUARD::QAB1(J),XQ(b)
    • B(k);CHECK,XP(E)::S(H),XB(k)
    • S(a);S_CUTQ(b)::QAB1(J)
    • S(f);S_CUTQ(b)::QAB1(J)
    • S(f);N_GUARD::QAR2(J)
    • P(i);N_GUARD,S_CUTR(h)::S(H),XP(g)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • S(a);P_SPINS(a),S_CUTQ(b)::QAB1(J)
        • S(f);P_SPINS(f),S_CUTQ(b)::QAB1(J)
      • Refutation
        • Q(b);P_PINP(E),P_SPINQ(b)
    • Try
      • Q(J);CHECK
      • Vars
        • P(g);P_SPINP(g)::QAB1(J),XP(g)
        • P(i);P_SPINP(i)::S(H),XP(g)
      • Refutation
        • R(h);P_SPINR(h)
  • Actual
    • Q(J);
    • Threat
      • B(D)
    • Vars
      • B(k);CHECK,XP(E)::S(H),XB(k)
      • Q(b);N_GUARD,XR(F)::QAB1(J)
      • Q(b);N_GUARD,XS(H)::R1(B)
      • Q(b);N_GUARD::QAB1(J)
      • Q(b);N_GUARD,P_PINP(E)::QAB1(J)
      • Q(b);N_GUARD::QAB1(J),XQ(b)
      • R(c);S_CUTQ(b)::R1(B)
      • S(a);S_CUTQ(b)::R1(B)
      • S(a);S_CUTQ(b)::QAB1(J)
      • S(f);S_CUTQ(b)::QAB1(J)
      • S(f);N_GUARD::QAR2(J)
      • P(g);::B(D),XP(g)
      • P(i);N_GUARD,S_CUTR(h)::S(H),XP(g)
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