MESON Chess Problem Database

Problem Display
PID: 250322 (5r2/3b3q/2P1RBPp/P1k1K2R/P3QN2/1n3rp1/8/8 w - - 0 1)

Barrow, John Hugh

Manchester Evening News, 1922

(First published on Sat Dec 23 1922)

5r2/3b3q/2P1RBPp/P1k1K2R/P3QN2/1n3rp1/8/8

#2

10 + 8

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg6
      • 2.Be7#
    • 1...Qg8
      • 2.Be7#
    • 1...Qe7
      • 2.Bxe7#
    • 1...Rf1
      • 2.Sd3#
    • 1...Rf2
      • 2.Sd3#
    • 1...Rd3
      • 2.Sxd3#
    • 1...Rxf4
      • 2.Kxf4#
    • 1...Rxf6
      • 2.Kxf6#
    • 1...Bxc6
      • 2.Rxc6#
    • 1...Bxe6
      • 2.Kxe6#
      • 2.Sxe6#
    • 1...Sa1
      • 2.Qd4#
    • 1...Sc1
      • 2.Qd4#
    • 1...Sd2
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sxa5
      • 2.Qd4#
  • Tries
    • 1.Qc2+?
      • 1...Rc3
        • 2.Qxc3#
      • 1...Kb4!
  • Keys
    • 1.Kf5!
      • threat
        • 2.Kg4#
      • 1...Qxg6+
        • 2.Kxg6#
      • 1...Rxf4+
        • 2.Kxf4#
      • 1...Rxf6+
        • 2.Kxf6#
      • 1...Bxe6+
        • 2.Kxe6#
      • 1...Sd4+
        • 2.Qxd4#
      • 1...Bxc6
        • 2.Rxc6#
      • 1...Sxa5
        • 2.Qd4#
      • 1...Rd3
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • Q(g);N_GUARD,XP(J)::B(I)
    • Q(g);N_GUARD::B(I)
    • Q(g);N_GUARD,P_PINR(H)::B(I),XQ(g)
    • R(b);N_GUARD::S(C)
    • R(b);N_GUARD::S(C),XR(b)
    • R(b);XS(C)::R(F)+K(E),XR(b)
    • R(h);XB(I)::R(F)+K(E),XR(h)
    • B(f);OGATE,XP(G)::R1(H),XB(f)
    • S(a);N_GUARD::QAB1(B)
    • S(a);N_GUARD::QAB1(B),XS(a)
    • S(a);N_GUARD,XP(D)::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR2(B),XR(b)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • K(E);P-FLIGHT,P_SPINB(I),P_SPINP(J),P_SPINR(H),P_SPINS(C)
    • Threat
      • R(F)+K(E)
    • Vars
      • Q(g);CHECK,XP(J)::R(F)+K(E),XQ(g)
      • R(b);CHECK,XS(C)::R(F)+K(E),XR(b)
      • R(h);CHECK,XB(I)::R(F)+K(E),XR(h)
      • B(f);CHECK,XR(H)::R(F)+K(E),XB(f)
      • S(a);CHECK,N_GUARD::QAB1(B),XS(a)
      • B(f);N_PINR(H),XP(G)::R1(H),XB(f)
      • S(a);N_GUARD,XP(D)::QAB1(B)
      • R(b);N_PINS(C)::S(C),XR(b)
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