MESON Chess Problem Database

Problem Display
PID: 78366 (3KRR2/3Q1pq1/2PP2pp/1N2b3/2P1k1N1/2Pr2PB/4P2r/2B1n3 w - - 0 1)

Hassan, Molham

Saunders, Denis M

Australian Chess, 2003

3KRR2/3Q1pq1/2PP2pp/1N2b3/2P1k1N1/2Pr2PB/4P2r/2B1n3

#2

14 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6+
      • 2.Sxf6#
    • 1...Qxf8
      • 2.Sf6#
    • 1...Qh7
      • 2.Sf6#
      • 2.Rxe5#
    • 1...Qg8
      • 2.Sf6#
      • 2.Rxe5#
    • 1...Rh1
      • 2.Sf2#
    • 1...Rf2
      • 2.Sxf2#
    • 1...Rxh3
      • 2.Sf2#
    • 1...Rxd6
      • 2.Sxd6#
    • 1...Sg2
      • 2.Sf2#
  • Tries
    • 1.Bg2+?
      • 1...Rf3
        • 2.Sf2#
      • 1...Sxg2
        • 2.Sf2#
      • 1...Sf3
        • 2.Sf2#
      • 1...Rxg2!
    • 1.Rxf7?
      • threat
        • 2.Rf4#
      • 1...Qf6+
        • 2.Sxf6#
      • 1...Qxf7
        • 2.Rxe5#
      • 1...Qf8
        • 2.Sf6#
      • 1...Rf2
        • 2.Sxf2#
      • 1...Sg2
        • 2.Sf2#
      • 1...g5
        • 2.Qf5#
      • 1...Rf3!
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Qf4#
      • 1...Qf6+
        • 2.Sxf6#
      • 1...Rxd6+
        • 2.Sxd6#
      • 1...Qxf8
        • 2.Sf6#
      • 1...Qxf7
        • 2.Rxe5#
      • 1...Rf2
        • 2.Sxf2#
      • 1...Rf3
        • 2.Qd5#
      • 1...Sg2
        • 2.Sf2#
      • 1...g5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(i);CHECK,N_GUARD::S(G),XQ(i)
    • Q(i);N_GUARD,P_PINR(M),XR(N)::S(G)
    • R(b);N_GUARD::S(G)
    • R(b);N_GUARD::S(G),XR(b)
    • R(b);N_GUARD,XB(E)::S(G)
    • R(c);P_PINQ(K),XP(J)::S(H),XR(c)
    • S(a);S_CUTR(b)::S(G)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • R(c);P_SPINR(c)::S(G)
        • S(a);XB(E)::S(G)
        • S(a);P_SPINS(a)::S(G)
      • Refutation
        • R(b);XB(E)
    • Try
      • R(N);XP(h)
      • Threat
        • R1(N)
      • Vars
        • Q(i);CHECK,N_GUARD::S(G),XQ(i)
        • Q(i);N_GUARD,XR(N)::R1(M),XB(e)
        • Q(i);N_GUARD,P_PINR(M)::S(G)
        • R(b);N_GUARD::S(G),XR(b)
        • S(a);S_CUTR(b)::S(G)
        • P(f);N_GUARD::QAB1(K)
      • Refutation
        • R(c);
  • Actual
    • Q(K);P_SPINP(J),XP(h)
    • Threat
      • QAR1(K)
    • Vars
      • Q(i);CHECK,N_GUARD::S(G),XQ(i)
      • R(c);CHECK,XP(J)::S(H),XR(c)
      • Q(i);N_GUARD,P_PINR(M),XR(N)::S(G)
      • Q(i);N_GUARD,XQ(K)::R1(M),XB(e)
      • R(b);N_GUARD::S(G),XR(b)
      • R(c);N_GUARD,N_PINP(J)::QAB1(K)
      • S(a);S_CUTR(b)::S(G)
      • P(f);N_GUARD::QAB1(K)
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