MESON Chess Problem Database

Problem Display
PID: 178540 (7b/qp6/2p5/NP4Q1/pPBkp3/K1p1N2r/2Pp1P2/n4R2 w - - 0 1)

Cresswell, James E

1st HM., London Transport Ty. (Busmen's Chess Review), 1964

7b/qp6/2p5/NP4Q1/pPBkp3/K1p1N2r/2Pp1P2/n4R2

#2

10 + 11

1111 Busmen's Chess Review 1965

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Qxc5#
    • 1...Qb8
      • 2.Qc5#
    • 1...Qxa5
      • 2.Qc5#
    • 1...Qa6
      • 2.Qc5#
    • 1...Qa8
      • 2.Qc5#
    • 1...Rxe3
      • 2.fxe3#
    • 1...Be5
      • 2.Sf5#
    • 1...Bf6
      • 2.Qxf6#
    • 1...Bg7
      • 2.Qxg7#
    • 1...Sxc2+
      • 2.Sxc2#
    • 1...d1Q
      • 2.Rxd1#
    • 1...d1S
      • 2.Rxd1#
    • 1...d1B
      • 2.Rxd1#
    • 1...d1R
      • 2.Rxd1#
    • 1...cxb5
      • 2.Qd5#
    • 1...c5
      • 2.Qd5#
    • 1...b6
      • 2.Sxc6#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Sf5#
        • 2.Qd6#
      • 1...Sxc2+
        • 2.Sxc2#
      • 1...Qxa5
        • 2.Qc5#
        • 2.Qd6#
      • 1...Rxe3
        • 2.Qd6#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Qb8
        • 2.Sf5#
        • 2.Qc5#
      • 1...Rf3
        • 2.Qd6#
      • 1...Rh6
        • 2.Sf5#
      • 1...Be5
        • 2.Sf5#
      • 1...Rh5!
    • 1.Qe5+?
      • 1...Bxe5
        • 2.Sf5#
      • 1...Kxe5!
  • Keys
    • 1.f4!
      • threat
        • 2.Sf5#
      • 1...Sxc2+
        • 2.Sxc2#
      • 1...Kxe3
        • 2.Qg1#
      • 1...Qxa5
        • 2.Qc5#
      • 1...Rxe3
        • 2.Qd8#
      • 1...exf4 ep
        • 2.Qf4#
      • 1...Qc5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • Q(i);N_GUARD,P_PINP(F)::QAB1(J),XQ(i)
    • Q(i);N_GUARD::QAB1(J)
    • Q(i);N_GUARD,XS(H)::QAB1(J)
    • R(d);OGATE,XS(E)::P(C),XR(d)
    • B(k);SBLOCK::S(E)
    • B(k);N_GUARD::QAB(J),XB(k)
    • S(a);CHECK,XP(B)::S(E),XS(a)
    • P(b);OGATEB::R(A),XQ(b)
    • P(b);OGATEB::R(A),XS(b)
    • P(b);OGATEB::R(A),XB(b)
    • P(b);OGATEB::R(A),XR(b)
    • P(h);N_GUARD,XP(I)::QAR1(J)
    • P(h);N_GUARD::QAR1(J)
    • P(j);N_GUARD::S(H),XP(h)
  • Tries
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);CHECK,XP(B)::S(E),XS(a)
        • R(d);XS(E)::QAR2(J)
        • Q(i);N_GUARD,P_PINP(F)::QAB1(J),XQ(i)
        • R(d);::QAR2(J)
        • R(d);::S(E)
        • B(k);::S(E)
      • Refutation
        • R(d);
    • Try
      • Q(J);CHECK
      • Vars
        • B(k);SBLOCK,XQ(J)::S(E)
      • Refutation
        • K(f);S_FLIGHT,XQ(J)
  • Actual
    • P(C);
    • Threat
      • S(E)
    • Vars
      • S(a);CHECK,XP(B)::S(E),XS(a)
      • K(f);OGATEB,S_FLIGHT,XS(E)::QAB(J)
      • Q(i);N_GUARD,XS(H)::QAB1(J)
      • R(d);SBLOCK,XS(E)::QAR(J)
      • P(g);EP,OGATE,XP(C)::QAR2(J)
      • Q(i);N_GUARD,P_PINP(F)::QAB1(J),XQ(i)
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