MESON Chess Problem Database

Problem Display
PID: 138461 (q7/pQN1b2r/2pR1P2/1P3k2/2N3Rp/K1B1p2P/B1P2P2/4r3 w - - 0 1)

Quah, James

The Problemist, 1995

q7/pQN1b2r/2pR1P2/1P3k2/2N3Rp/K1B1p2P/B1P2P2/4r3

#2

13 + 9

14772 Creative and Imaginative Chess Concepts 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qc8
      • 2.Qxc8#
    • 1...Ra1
      • 2.Sxe3#
    • 1...Rb1
      • 2.Sxe3#
    • 1...Rc1
      • 2.Sxe3#
    • 1...Rd1
      • 2.Sxe3#
    • 1...Rf1
      • 2.Sxe3#
    • 1...Rg1
      • 2.Sxe3#
    • 1...Rh1
      • 2.Sxe3#
    • 1...Bxd6+
      • 2.Sxd6#
    • 1...Bxf6
      • 2.Rxf6#
    • 1...e2
      • 2.Se3#
    • 1...c5
      • 2.Rd5#
  • Tries
    • 1.Sxa8?
      • threat
        • 2.Qc8#
        • 2.Qd7#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Bxf6
        • 2.Rxf6#
        • 2.Qxh7#
      • 1...Rh8
        • 2.Qd7#
      • 1...Bd8
        • 2.Qxh7#
      • 1...Bf8
        • 2.Qxh7#
      • 1...exf2!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sd4#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Bxf6
        • 2.Qxh7#
      • 1...Rd1
        • 2.Sxe3#
      • 1...c5
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • Q(i);N_GUARD::QAB(L),XQ(i)
    • R(a);N_GUARD,P_PINB(A)::S(G),XP(b)
    • R(a);N_GUARD::S(G),XP(b)
    • B(g);CHECK,XR(J)::S(G),XB(g)
    • B(g);N_PINR(J),XP(K)::R1(J),XB(g)
    • P(b);S_CUTR(a)::S(G)
    • P(e);N_PINR(J)::R(J)
  • Tries
    • Try
      • S(M);XQ(i)
      • Threat
        • DUALS(2)
      • Vars
        • B(g);CHECK,XR(J)::S(G),XB(g)
        • R(h);::QAB(L)
        • B(g);N_PINR(J),OGATE::QAB(L),XR(h)
        • B(g);OGATE::QAB(L),XR(h)
      • Refutation
        • P(b);XP(C)
  • Actual
    • S(M);
    • Threat
      • S(M)
    • Vars
      • B(g);CHECK,XR(J)::S(G),XB(g)
      • B(g);N_PINR(J),OGATE,XP(K)::QAB(L),XR(h)
      • R(a);N_GUARD::S(G),XP(b)
      • P(e);N_PINR(J)::R1(H)
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