MESON Chess Problem Database

Problem Display
PID: 141412 (r4b2/3B2p1/p4p2/3k2qR/2N1NpP1/1Pp2P2/n4Q2/K7 w - - 0 1)

Markwick, Frederick W

Source?, 1882

r4b2/3B2p1/p4p2/3k2qR/2N1NpP1/1Pp2P2/n4Q2/K7

#2

9 + 10

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Sb6#
    • 1...Qf5
      • 2.Rxf5#
    • 1...Bc5
      • 2.Qxc5#
    • 1...Sc1
      • 2.Sxc3#
    • 1...Sb4
      • 2.Sxc3#
    • 1...c2
      • 2.Qd2#
    • 1...g6
      • 2.Sxf6#
  • Tries
    • 1.Kxa2?
      • threat
        • 2.Sxc3#
      • 1...c2
        • 2.Sc3#
        • 2.Qd2#
      • 1...Bb4!
    • 1.Be6+?
      • 1...Kc6
        • 2.Qb6#
      • 1...Kxe6!
    • 1.Rxg5+?
      • 1...f5
        • 2.Rxf5#
      • 1...fxg5!
    • 1.Qg1?
      • threat
        • 2.Qd1#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sc1
        • 2.Sxc3#
      • 1...Sb4
        • 2.Sxc3#
      • 1...c2!
    • 1.Qe3?
      • threat
        • 2.Qd3#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sc1
        • 2.Sxc3#
      • 1...Sb4
        • 2.Sxc3#
      • 1...fxe3!
    • 1.Qb6?
      • threat
        • 2.Be6#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Re8!
  • Keys
    • 1.Rh1!
      • threat
        • 2.Rd1#
      • 1...Qe5
        • 2.Sb6#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sc1
        • 2.Sxc3#
      • 1...Sb4
        • 2.Sxc3#
      • 1...c2
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(e);::S(E)
    • Q(e);OGATE::R(H),XQ(e)
    • B(j);N_GUARD::QAR1(B),XB(j)
    • S(a);N_GUARD::S(F),XP(b)
    • P(b);N_GUARD::QAR(B)
    • P(h);N_GUARD::S(F),XP(g)
  • Tries
    • Try
      • K(A);P-FLIGHT,XS(a)
      • Threat
        • S(F),XP(b)
      • Refutation
        • B(j);
    • Try
      • B(I);CHECK
      • Vars
        • K(d);N_SPINQ(e),S_FLIGHT::QAR1(B)
      • Refutation
        • K(d);N_SPINQ(e),S_FLIGHT,XB(I)
    • Try
      • R(H);CHECK,XQ(e)
      • Vars
        • P(g);P_SPINP(g)::R(H),XP(g)
      • Refutation
        • P(g);XR(H)
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • B(j);N_GUARD::QAR1(B),XB(j)
        • S(a);N_GUARD::S(F),XP(b)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • B(j);N_GUARD::QAR1(B),XB(j)
        • S(a);N_GUARD::S(F),XP(b)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);
      • Threat
        • B(I)
      • Vars
        • B(j);N_GUARD::QAR1(B),XB(j)
      • Refutation
        • R(i);
  • Actual
    • R(H);N_PINQ(e)
    • Threat
      • R(H)
    • Vars
      • Q(e);SBLOCK::S(E)
      • B(j);N_GUARD::QAR1(B),XB(j)
      • S(a);N_GUARD::S(F),XP(b)
      • P(b);N_GUARD::QAR(B)
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