MESON Chess Problem Database

Problem Display
PID: 182674 (1r4b1/p2N4/8/KP2Qp2/2k5/3R1P2/p7/b1nN4 w - - 0 1)

Geary, TW

British Chess Magazine, 1913

1r4b1/p2N4/8/KP2Qp2/2k5/3R1P2/p7/b1nN4

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb5+
      • 2.Qxb5#
    • 1...Bb2
      • 2.Sxb2#
    • 1...Bc3+
      • 2.Rxc3#
      • 2.Qxc3#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Bh7
      • 2.Qd5#
  • Tries
    • 1.Qf4+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...Kxd3!
    • 1.Qe4+?
      • 1...Bd4
        • 2.Sb2#
        • 2.Se3#
        • 2.Rc3#
        • 2.Qxd4#
      • 1...fxe4!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Rd4#
      • 1...Rxb5+
        • 2.Qxb5#
      • 1...Sb3+
        • 2.Qxb3#
      • 1...Kxd3
        • 2.Se5#
      • 1...Bxb2
        • 2.Sxb2#
      • 1...Sxd3
        • 2.Se3#
      • 1...Se2
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(g);CHECK,OGATE,XP(E)::QAB1(F),XR(g)
    • B(a);N_GUARD::S(A),XB(a)
    • B(a);N_GUARD::QAR1(F),XB(a)
    • B(h);N_GUARD::QAB1(F),XB(h)
    • B(h);N_GUARD::QAB1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(F),XB(a)
      • Refutation
        • K(d);S_FLIGHT,XR(B)
    • Try
      • Q(F);CHECK
      • Refutation
        • P(e);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • R1(B)
    • Vars
      • R(g);CHECK,OGATE,XP(E)::QAB1(F),XR(g)
      • S(b);CHECK,N_GUARD::QAB1(F),XS(b)
      • K(d);S_FLIGHT,XR(B)::S(G)
      • B(a);XQ(F)::S(A),XB(a)
      • S(b);SBLOCK,XR(B)::S(A)
      • S(b);N_GUARD::QAB1(F)
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