MESON Chess Problem Database

Problem Display
PID: 250367 (1b1n4/3Q1p2/p2p1P1K/3k1rP1/1P2R1N1/3B1P1N/b2p1p1B/2n1q3 w - - 0 1)

Harding, WT

Manchester Evening News, 1923

(First published on Sat Jul 28 1923)

1b1n4/3Q1p2/p2p1P1K/3k1rP1/1P2R1N1/3B1P1N/b2p1p1B/2n1q3

#2

11 + 12

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Se3#
    • 1...Qf1
      • 2.Se3#
    • 1...Qg1
      • 2.Se3#
    • 1...Qh1
      • 2.Se3#
    • 1...Qe3
      • 2.Sxe3#
    • 1...Rf4
      • 2.Sxf4#
    • 1...Re5
      • 2.Sf4#
    • 1...Rxg5
      • 2.Sf4#
    • 1...Rxf6+
      • 2.Sxf6#
    • 1...Bb1
      • 2.Bc4#
    • 1...Bc4
      • 2.Bxc4#
    • 1...Ba7
      • 2.Qxd6#
    • 1...Se2
      • 2.Se3#
    • 1...Sb3
      • 2.Bc4#
    • 1...Sc6
      • 2.Qxf7#
    • 1...Se6
      • 2.Qb7#
    • 1...Sb7
      • 2.Qxb7#
    • 1...a5
      • 2.Qb5#
  • Tries
    • 1.Qb7+?
      • 1...Sc6
        • 2.Qxf7#
      • 1...Sxb7!
  • Keys
    • 1.Be5!
      • threat
        • 2.Rd4#
      • 1...Rxf6+
        • 2.Sxf6#
      • 1...Qxe4
        • 2.fxe4#
      • 1...Rxe5
        • 2.Sf4#
      • 1...Qe3
        • 2.Sxe3#
      • 1...Rf4
        • 2.Sxf4#
      • 1...Ba7
        • 2.Qxd6#
      • 1...Se2
        • 2.Se3#
      • 1...Sb3
        • 2.Bc4#
      • 1...Sc6
        • 2.Qxf7#
      • 1...Se6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(b);N_GUARD::S(G)
    • Q(b);N_GUARD,P_PINP(H)::S(G),XQ(b)
    • R(g);N_GUARD::S(D),XR(g)
    • R(g);N_GUARD::S(D)
    • R(g);N_GUARD,XP(H)::S(D)
    • R(g);CHECK,XP(I)::S(G),XR(g)
    • B(c);N_GUARD::B(B)
    • B(c);N_GUARD::B(B),XB(c)
    • B(k);N_GUARD::QAR1(K),XP(i)
    • S(a);S_CUTQ(b)::S(G)
    • S(a);S_CUTB(c)::B(B)
    • S(l);N_GUARD,SBLOCK::QAB(K),XP(j)
    • S(l);N_GUARD::QAB(K)
    • S(l);N_GUARD::QAB(K),XS(l)
    • P(h);N_GUARD::QAR2(K)
  • Tries
    • Try
      • Q(K);CHECK,N_PINP(i)
      • Vars
        • S(l);N_GUARD,P_SPINS(l),SBLOCK::QAB(K),XP(j)
      • Refutation
        • S(l);XQ(K)
  • Actual
    • B(A);
    • Threat
      • R1(F)
    • Vars
      • R(g);CHECK,XP(I)::S(G),XR(g)
      • Q(b);OGATE,XR(F)::P(C),XQ(b)
      • R(g);N_GUARD,XB(A)::S(D)
      • Q(b);N_GUARD,P_PINP(H)::S(G),XQ(b)
      • R(g);N_GUARD::S(D),XR(g)
      • B(k);N_GUARD::QAR1(K),XP(i)
      • S(a);S_CUTQ(b)::S(G)
      • S(a);S_CUTB(c)::B(B)
      • S(l);N_GUARD,SBLOCK::QAB(K),XP(j)
      • S(l);N_GUARD,SBLOCK::QAB(K)
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