MESON Chess Problem Database

Problem Display
PID: 162180 (1n2Q1b1/2b2p2/2r5/3kP3/n3NK2/2pP4/Nr2P3/6B1 w - - 0 1)

Millins, Edward

The Observer, 1924

(First published on Sun Apr 6 1924)

1n2Q1b1/2b2p2/2r5/3kP3/n3NK2/2pP4/Nr2P3/6B1

#2

8 + 9

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Sb4#
    • 1...Rd2
      • 2.Sb4#
    • 1...Rxe2
      • 2.Sb4#
    • 1...Rb4
      • 2.Sxb4#
    • 1...Rc5
      • 2.Sf6#
    • 1...Rf6+
      • 2.Sxf6#
    • 1...Bxe5+
      • 2.Qxe5#
    • 1...Bd6
      • 2.Sf6#
    • 1...Sc5
      • 2.Saxc3#
      • 2.Sexc3#
  • Tries
    • 1.Saxc3+?
      • 1...Rxc3
        • 2.Sf6#
      • 1...Sxc3!
    • 1.Sexc3+?
      • 1...Rxc3
        • 2.e4#
      • 1...Sxc3!
    • 1.Qd7+?
      • 1...Rd6
        • 2.Sf6#
      • 1...Bd6
        • 2.Sf6#
      • 1...Sxd7!
  • Keys
    • 1.Sd6!
      • threat
        • 2.e4#
      • 1...Rb4+
        • 2.Sxb4#
      • 1...Rc4+
        • 2.dxc4#
      • 1...Rxe2
        • 2.Sb4#
      • 1...Bh7
        • 2.Qxf7#
      • 1...Sc5
        • 2.Sxc3#
      • 1...f5
        • 2.Qxg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::S(B)
    • R(a);N_GUARD,XP(C)::S(B)
    • R(a);N_GUARD,P_PINS(E)::S(B),XR(a)
    • R(e);N_GUARD::S(E)
    • R(e);CHECK,N_GUARD::S(E),XR(e)
    • B(f);CHECK,OGATE,XP(G)::QAR1(H),XB(f)
    • B(f);S_CUTR(e)::S(E)
  • Tries
    • Try
      • S(B);CHECK,XP(b)
      • Vars
        • R(e);XS(B)::S(E)
      • Refutation
        • S(c);XS(B)
    • Try
      • S(E);CHECK,XP(b)
      • Vars
        • R(e);XS(E)::P(C)
      • Refutation
        • S(c);XS(E)
    • Try
      • Q(H);CHECK
      • Vars
        • R(e);N_PINP(G),P_SPINR(e)::S(E)
        • B(f);P_SPINB(f)::S(E)
      • Refutation
        • S(h);XQ(H)
  • Actual
    • S(E);N_SPINP(G)
    • Threat
      • P(C)
    • Vars
      • R(a);CHECK,N_GUARD::S(B),XR(a)
      • R(e);CHECK,OGATE::P(D),XR(e)
      • R(a);N_GUARD,XP(C)::S(B)
      • B(i);N_GUARD::QAB(H),XP(g)
      • S(c);N_GUARD,S_CUTR(e)::S(B),XP(b)
      • P(g);OGATEB::QAB(H),XB(i)
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