MESON Chess Problem Database

Problem Display
PID: 40023 (8/4p2p/2pbp2B/Q3P1KP/1r1n2NP/N2P4/1PPkP2R/R7 w - - 0 1)

Barnes, Barry Peter

Evening News, 1955

8/4p2p/2pbp2B/Q3P1KP/1r1n2NP/N2P4/1PPkP2R/R7

#2

14 + 8

4199 Barnes about Chess Problems 2001
5373 Conquering Kings 2004
133 The Problemist Supplement 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Qxb4#
    • 1...Bc7
      • 2.Qxb4#
    • 1...Bb8
      • 2.Qxb4#
    • 1...Sxc2
      • 2.Sc4#
    • 1...Sb3
      • 2.e3#
      • 2.e4#
    • 1...Sf3+
      • 2.exf3#
    • 1...Sb5
      • 2.e3#
      • 2.e4#
    • 1...Sf5
      • 2.e3#
      • 2.e4#
  • Tries
    • 1.Se3?
      • threat
        • 2.Sac4#
        • 2.Sf1#
        • 2.Sec4#
      • 1...Kxe3
        • 2.Kg4#
      • 1...Sf3+!
    • 1.exd6?
      • threat
        • 2.Qxb4#
      • 1...Sf3+
        • 2.exf3#
      • 1...Sxc2
        • 2.Sc4#
      • 1...Sb5
        • 2.e3#
        • 2.e4#
      • 1...c5!
  • Keys
    • 1.Kf4!
      • threat
        • 2.Kg3#
        • 2.Ke4#
      • 1...Bxe5+
        • 2.Kxe5#
      • 1...Sxc2+
        • 2.Sc4#
      • 1...Sxe2+
        • 2.Kf3#
      • 1...Sb3+
        • 2.Kf3#
        • 2.Kg3#
        • 2.e4#
      • 1...Sf3+
        • 2.Kxf3#
      • 1...Sb5+
        • 2.Kf3#
        • 2.Kg3#
        • 2.e4#
      • 1...Sf5+
        • 2.e4#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(e);N_GUARD,XP(K)::QAB(J),XR(b)
    • B(e);N_GUARD::QAB(J),XR(b)
    • S(c);SBLOCK,XP(C)::S(F)
    • S(c);CHECK,OGATE::R(E)+P(D),XS(c)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(3)
      • Vars
        • K(a);N_SPINR(b),S_FLIGHT,XS(H)::B(N)+K(L)
      • Refutation
        • S(c);CHECK
    • Try
      • P(K);XB(e)
      • Threat
        • QAB(J),XR(b)
      • Vars
        • S(c);CHECK,OGATE::R(E)+P(D),XS(c)
        • S(c);SBLOCK,XP(C)::S(F)
      • Refutation
        • P(d);
  • Actual
    • K(L);P_SPINP(K),S_FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • B(e);CHECK,XP(K)::B(N)+K(L),XB(e)
      • S(c);CHECK,SBLOCK,XP(C)::S(F)
      • S(c);CHECK,P_SPINS(c),XP(D)::B(N)+K(L)
      • S(c);CHECK::B(N)+K(L),XS(c)
      • S(c);CHECK,N_GUARD::R(E)+P(D)
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