MESON Chess Problem Database

Problem Display
PID: 40669 (3Nn2b/8/1Kp1N1pp/1p2k3/1QqRBR2/8/8/1nB5 w - - 0 1)

Kovacevic, Marjan

2nd Prize, The Problemist, 2001

3Nn2b/8/1Kp1N1pp/1p2k3/1QqRBR2/8/8/1nB5

#2

8 + 9

56 The Problemist 2003
145 StrateGems 2005
23 Die Schwalbe 2007
15174 FIDE Album (2001-2003) 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Qc5#
    • 1...Qe2
      • 2.Qc5#
    • 1...Qd3
      • 2.Qc5#
    • 1...Qxd4+
      • 2.Qxd4#
    • 1...Qc5+
      • 2.Qxc5#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sf6
      • 2.Qd6#
    • 1...Sc7
      • 2.Qd6#
    • 1...Sg7
      • 2.Qd6#
    • 1...g5
      • 2.Rf5#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Sxc6#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...Kxd4
        • 2.Sxc6#
      • 1...Qxc1
        • 2.Sd3#
      • 1...Qxd4
        • 2.Sf7#
      • 1...Qd5
        • 2.Sd3#
      • 1...Qe6
        • 2.Sd3#
      • 1...Sd2!
    • 1.Sxc6+?
      • 1...Kxe6
        • 2.Qe7#
      • 1...Qxc6+!
    • 1.Bxg6?
      • threat
        • 2.Rf5#
      • 1...Qxd4+
        • 2.Qxd4#
      • 1...Qc5+
        • 2.Qxc5#
      • 1...Qxe6
        • 2.Qe1#
      • 1...Qf1
        • 2.Qc5#
      • 1...Qd3
        • 2.Qc5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sg7
        • 2.Qd6#
      • 1...Qc2!
    • 1.Rd6?
      • threat
        • 2.Sf7#
      • 1...Qd4+
        • 2.Qxd4#
      • 1...Qc5+
        • 2.Qxc5#
      • 1...Qxe6
        • 2.Sxc6#
        • 2.Rxe6#
        • 2.Qd4#
      • 1...Sxd6!
    • 1.Qxc4?
      • threat
        • 2.Sxc6#
        • 2.Sf7#
        • 2.Qc5#
      • 1...Sc3
        • 2.Sxc6#
        • 2.Sf7#
      • 1...Sd6
        • 2.Sxc6#
        • 2.Qc5#
      • 1...Sf6
        • 2.Sxc6#
        • 2.Sf7#
      • 1...Sc7
        • 2.Sxc6#
        • 2.Sf7#
      • 1...c5
        • 2.Sc6#
        • 2.Sf7#
        • 2.Rd5#
        • 2.Qd5#
        • 2.Qxc5#
      • 1...bxc4!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Sf7#
      • 1...Qxd4+
        • 2.Sc5#
      • 1...Qc5+
        • 2.Qxc5#
      • 1...Qxe6
        • 2.Sxc6#
      • 1...Sd6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::QAR2(B)
    • Q(b);CHECK,OGATE,XR(C)::QAB1(B),XQ(b)
    • Q(b);CHECK,N_GUARD::QAR2(B),XQ(b)
    • S(h);N_GUARD::QAB1(B),XS(h)
    • S(h);N_GUARD::QAB1(B)
    • P(f);N_GUARD::R1(E)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(H),XP(e)
      • Vars
        • Q(b);CHECK,OGATE,XS(G)::QAR2(B),XQ(b)
        • K(d);P_SPINQ(b),S_FLIGHT,XR(C)::S(H),XP(e)
        • Q(b);N_GUARD,XB(A)::S(G)
        • Q(b);N_GUARD,P_PINS(G),XR(C)::S(H)
        • Q(b);N_GUARD::S(G)
      • Refutation
        • S(a);
    • Try
      • S(H);CHECK,XP(e)
      • Vars
        • K(d);P-FLIGHT,XS(G)::QAR1(B)
      • Refutation
        • Q(b);CHECK,XS(H)
    • Try
      • B(D);XP(f)
      • Threat
        • R1(E)
      • Vars
        • Q(b);CHECK,OGATE,XR(C)::QAB1(B),XQ(b)
        • Q(b);CHECK,N_GUARD::QAR2(B),XQ(b)
        • Q(b);N_GUARD,XS(G)::QAR(B)
        • Q(b);N_GUARD::QAR2(B)
        • S(h);N_GUARD::QAB1(B),XS(h)
        • S(h);N_GUARD::QAB1(B)
      • Refutation
        • Q(b);
    • Try
      • R(C);
      • Threat
        • S(H)
      • Vars
        • Q(b);CHECK,OGATE::QAB1(B),XQ(b)
        • Q(b);CHECK,N_GUARD::QAR2(B),XQ(b)
      • Refutation
        • S(h);XR(C)
    • Try
      • Q(B);XQ(b)
      • Threat
        • DUALS(3)
      • Refutation
        • P(c);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • S(H)
    • Vars
      • Q(b);CHECK,N_GUARD,SBLOCK,XR(C)::QAR(B)+S(G)
      • Q(b);CHECK,N_GUARD::QAR2(B),XQ(b)
      • Q(b);N_GUARD,P_SPINQ(b),XS(G)::S(H),XP(e)
      • S(h);N_GUARD::QAB1(B),XS(h)
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