MESON Chess Problem Database

Problem Display
PID: 270660 (2b5/n2B1Q2/2p5/6p1/r2Nk1q1/pR2PNP1/3pR3/3K4 w - - 0 1)

Smith, James Alfred John

2nd Prize, Sunday Referee, 1932

(First published on Sun Jan 24 1932)

2b5/n2B1Q2/2p5/6p1/r2Nk1q1/pR2PNP1/3pR3/3K4

#2

9 + 9

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf3
      • 2.Qe6#
    • 1...Qf5
      • 2.Qxf5#
    • 1...Qh5
      • 2.Qe6#
      • 2.Qf5#
    • 1...Qe6
      • 2.Qxe6#
    • 1...Qxg3
      • 2.Qf5#
    • 1...Qf4
      • 2.exf4#
    • 1...Qh4
      • 2.Qe6#
      • 2.Qf5#
    • 1...Rxd4
      • 2.exd4#
    • 1...Sb5
      • 2.Bxc6#
  • Tries
    • 1.Sxc6?
      • threat
        • 2.Sxd2#
      • 1...Qxf3
        • 2.Qe6#
      • 1...Qxd7
        • 2.Sxg5#
      • 1...Sxc6
        • 2.Bxc6#
      • 1...Rd4
        • 2.exd4#
      • 1...Qe6!
    • 1.Qg6+?
      • 1...Qf5
        • 2.Qxf5#
      • 1...Kd5!
    • 1.Qe8+?
      • 1...Qe6
        • 2.Qxe6#
      • 1...Kd5!
    • 1.Qe7+?
      • 1...Qe6
        • 2.Qxe6#
      • 1...Kd5!
    • 1.Qh7+?
      • 1...Qf5
        • 2.Qxf5#
      • 1...Kd5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sd6#
      • 1...Kxf3
        • 2.e4#
      • 1...Qxf3
        • 2.Qe6#
      • 1...Qxf5
        • 2.Qxf5#
      • 1...Qxg3
        • 2.Sxg3#
      • 1...Qf4
        • 2.exf4#
      • 1...Rd4
        • 2.exd4#
      • 1...Sb5
        • 2.Bxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(e);N_GUARD,P_PINR(B),XS(E)::QAR2(I)
    • Q(e);N_GUARD::QAB1(I),XQ(e)
    • Q(e);N_GUARD::QAR2(I),XQ(e)
    • Q(e);N_GUARD,XP(F)::QAB1(I)
    • Q(e);OGATE::R(B)+P(D),XQ(e)
    • R(c);OGATE,XS(G)::R(B)+P(D),XR(c)
    • S(h);N_GUARD::B(H),XP(g)
  • Tries
    • Try
      • S(G);XP(g)
      • Threat
        • S(E),XP(a)
      • Vars
        • Q(e);N_GUARD,P_PINR(B),SBLOCK,XS(E)::QAR2(I)
        • Q(e);N_GUARD,XB(H)::S(E),XP(f)
        • S(h);OGATE,XS(G)::B(H),XS(h)
        • R(c);OGATE::R(B)+P(D),XR(c)
      • Refutation
        • Q(e);
    • Try
      • Q(I);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e)::QAB1(I),XQ(e)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e)::QAR2(I),XQ(e)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e)::QAR2(I),XQ(e)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e)::QAB1(I),XQ(e)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(d);OGATE,S_FLIGHT,XS(E)::R(C)+P(D)
      • Q(e);P_PINR(B),SBLOCK,XS(E)::QAR2(I)
      • Q(e);OGATE,XS(G)::QAB1(I),XQ(e)
      • Q(e);XP(F)::S(G),XQ(e)
      • Q(e);OGATE::R(B)+P(D),XQ(e)
      • R(c);OGATE::R(B)+P(D),XR(c)
      • S(h);N_GUARD::B(H),XP(g)
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