MESON Chess Problem Database

Problem Display
PID: 146507 (1Q2nq2/5npb/4p1pb/2k5/Ppp1BN2/4KP2/3PPB2/2Rr4 w - - 0 1)

Easter, Norris

Grantham Journal, 1925

(First published on Sat Jul 18 1925)

1Q2nq2/5npb/4p1pb/2k5/Ppp1BN2/4KP2/3PPB2/2Rr4

#2

10 + 12

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Qb5#
    • 1...Re1
      • 2.d4#
    • 1...Rf1
      • 2.d4#
    • 1...Rg1
      • 2.d4#
    • 1...Rh1
      • 2.d4#
    • 1...Rxd2
      • 2.Kxd2#
    • 1...Bxf4+
      • 2.Kxf4#
    • 1...Sg5
      • 2.Sd3#
    • 1...Sfd6
      • 2.Qa7#
    • 1...Sed6
      • 2.Qa7#
      • 2.Qc7#
    • 1...Sf6
      • 2.Qc7#
    • 1...Sc7
      • 2.Qxc7#
    • 1...c3
      • 2.Kd3#
    • 1...g5
      • 2.Sd3#
      • 2.Sxe6#
  • Tries
    • 1.a5?
      • threat
        • 2.Qb6#
      • 1...Bxf4+
        • 2.Kxf4#
      • 1...c3
        • 2.Kd3#
      • 1...Qd6!
  • Keys
    • 1.Ba8!
      • threat
        • 2.Ke4#
      • 1...Bxf4+
        • 2.Kxf4#
      • 1...Rxd2
        • 2.Kxd2#
      • 1...Sc7
        • 2.Qxc7#
      • 1...c3
        • 2.Kd3#
      • 1...Qd6
        • 2.Qb5#
      • 1...Rf1
        • 2.d4#
      • 1...Sg5
        • 2.Sd3#
      • 1...Sfd6
        • 2.Qa7#
      • 1...Sed6
        • 2.Qa7#
        • 2.Qc7#
      • 1...Sf6
        • 2.Qc7#
      • 1...g5
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(l);SBLOCK::QAR1(J)
    • R(a);N_GUARD,P_PINP(C)::P(B)
    • R(a);N_GUARD::P(B)
    • R(a);XP(B)::B(D)+K(E),XR(a)
    • B(g);CHECK,XS(I)::B(D)+K(E),XB(g)
    • S(h);N_PINS(I)::S(I)
    • S(h);SBLOCK::QAB(J)
    • S(k);N_GUARD::QAR2(J)
    • S(k);N_GUARD::QAR2(J),XS(k)
    • P(c);::B(D)+K(E)
  • Tries
    • Try
      • P(G);
      • Threat
        • QAB1(J)
      • Vars
        • B(g);CHECK,XS(I)::B(D)+K(E),XB(g)
        • P(c);::B(D)+K(E)
      • Refutation
        • Q(l);
  • Actual
    • B(H);
    • Threat
      • B(D)+K(E)
    • Vars
      • B(g);CHECK,XS(I)::B(D)+K(E),XB(g)
      • R(a);XP(B)::B(D)+K(E),XR(a)
      • S(k);N_GUARD::QAR2(J),XS(k)
      • P(c);::B(D)+K(E)
      • Q(l);SBLOCK::QAR1(J)
      • R(a);N_GUARD::P(B)
      • S(h);N_PINS(I)::S(I)
      • S(h);SBLOCK::QAB(J)
      • S(k);N_GUARD::QAR2(J)
      • P(f);N_PINS(I)::S(I),XP(e)
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