MESON Chess Problem Database

Problem Display
PID: 159603 (8/B5n1/n1pQp2q/2rb1P2/2PNk3/3RN3/1K1P4/1B4b1 w - - 0 1)

Tomson, Brian

The Problemist, 1982

8/B5n1/n1pQp2q/2rb1P2/2PNk3/3RN3/1K1P4/1B4b1

#2

10 + 9

15561 Fifty Chess Problems (Brian Tomson) 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Rc3#
    • 1...Ra5
      • 2.Ra3#
      • 2.Rb3#
      • 2.Rc3#
    • 1...Rb5+
      • 2.Rb3#
  • Tries
    • 1.Sd1?
      • threat
        • 2.Sc3#
      • 1...Qxd2+
        • 2.Rxd2#
      • 1...Rb5+
        • 2.Rb3#
      • 1...Bxd4+
        • 2.Rc3#
      • 1...Rxc4
        • 2.Rc3#
        • 2.Re3#
      • 1...e5!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Qe5#
      • 1...Qxd2+
        • 2.Rxd2#
      • 1...Rb5+
        • 2.Rb3#
      • 1...Bxd4+
        • 2.Rc3#
      • 1...Bxc4
        • 2.Re3#
      • 1...e5
        • 2.Qxe5#
      • 1...Qf4
        • 2.Sf6#
      • 1...Qh2
        • 2.Sf6#
      • 1...Qf6
        • 2.Sxf6#
      • 1...Bh2
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • R(c);XP(F)::B(A)+R(D)
    • R(c);CHECK::B(A)+R(D)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • Q(h);CHECK,OGATE,XP(C)::B(A)+R(D),XQ(h)
        • R(c);CHECK::B(A)+R(D)
        • B(a);CHECK,SBLOCK,XS(G)::B(A)+R(D)
      • Refutation
        • P(g);
  • Actual
    • S(E);
    • Threat
      • QAR1(I)
    • Vars
      • Q(h);CHECK,OGATE,XP(C)::B(A)+R(D),XQ(h)
      • R(c);CHECK::B(A)+R(D)
      • B(a);CHECK,SBLOCK,XS(G)::B(A)+R(D)
      • B(d);XP(F)::B(A)+R(D),DCHECK
      • P(g);::QAR1(I),XP(g)
      • Q(h);N_GUARD::S(E)
      • Q(h);N_GUARD,P_PINP(C)::S(E)
      • Q(h);N_GUARD,P_PINS(G)::S(E),XQ(h)
      • B(a);N_GUARD::S(E)
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