MESON Chess Problem Database

Problem Display
PID: 81442 (5n2/3p2Qn/5q2/2R4p/1BNk4/1Pp5/2p2NPK/8 w - - 0 1)

Bakcsi, Gyorgy

2nd Comm., Sakkelet, 1986

5n2/3p2Qn/5q2/2R4p/1BNk4/1Pp5/2p2NPK/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5+
      • 2.Qxe5#
    • 1...Sg5
      • 2.Qxf6#
    • 1...Se6
      • 2.Qxd7#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sf5#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Ke3!
    • 1.Rxh5?
      • threat
        • 2.Bc5#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Se6
        • 2.Qxd7#
      • 1...d5
        • 2.Rh4#
      • 1...d6
        • 2.Qa7#
      • 1...Sg5!
    • 1.Qg3?
      • threat
        • 2.Qxc3#
        • 2.Qd3#
        • 2.Qe3#
      • 1...Qh4+
        • 2.Qxh4#
      • 1...c1Q
        • 2.Qd3#
      • 1...c1S
        • 2.Qxc3#
        • 2.Qe3#
      • 1...c1B
        • 2.Qxc3#
        • 2.Qd3#
      • 1...c1R
        • 2.Qd3#
        • 2.Qe3#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Qg5
        • 2.Qxc3#
        • 2.Qd3#
      • 1...Qe7
        • 2.Qxc3#
        • 2.Qd3#
      • 1...Qf3
        • 2.Qe5#
      • 1...Qf4
        • 2.Qxf4#
      • 1...Qf5
        • 2.Qxc3#
        • 2.Qe3#
      • 1...Qd6
        • 2.Qxd6#
      • 1...Qe6
        • 2.Qxc3#
        • 2.Qd3#
      • 1...Qg6
        • 2.Qe5#
        • 2.Qxc3#
        • 2.Qe3#
      • 1...Qh6
        • 2.Qe5#
        • 2.Qxc3#
        • 2.Qd3#
      • 1...Qxf2!
    • 1.Qg4+?
      • 1...Qf4+
        • 2.Qxf4#
      • 1...hxg4!
    • 1.Qxd7+?
      • 1...Qd6+
        • 2.Qxd6#
      • 1...Sxd7!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Bc5#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Se6
        • 2.Qxd7#
      • 1...d5
        • 2.Rf4#
      • 1...d6
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(e);CHECK,OGATE::QAB1(H),XQ(e)
    • S(g);N_GUARD::QAB(H),XQ(e)
    • S(h);N_GUARD::QAR(H),XP(f)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • Q(e);CHECK,OGATE::QAB1(H),XQ(e)
      • Refutation
        • K(c);N_SPINQ(e),S_FLIGHT
    • Try
      • R(G);XP(d)
      • Threat
        • B(E)
      • Vars
        • Q(e);CHECK,OGATE::QAB1(H),XQ(e)
        • S(h);N_GUARD::QAR(H),XP(f)
        • P(f);SBLOCK::R(G)
        • P(f);OGATE::QAB(H)
      • Refutation
        • S(g);
    • Try
      • Q(H);N_PINQ(e)
      • Threat
        • DUALS(3)
      • Vars
        • Q(e);CHECK,N_GUARD::QAR(H),XQ(e)
        • P(a);::QAR1(H)
        • Q(e);N_GUARD,P_PINQ(H)::QAB1(H),XQ(e)
        • Q(e);N_GUARD::QAB1(H)
        • Q(e);N_GUARD,P_PINQ(H)::QAR2(H),XQ(e)
      • Refutation
        • Q(e);P_PINP(B),XS(A)
    • Try
      • Q(H);CHECK,N_PINQ(e)
      • Vars
        • Q(e);CHECK,N_GUARD,P_SPINQ(e)::QAR2(H),XQ(e)
      • Refutation
        • P(d);XQ(H)
    • Try
      • Q(H);CHECK,N_PINQ(e),XP(f)
      • Vars
        • Q(e);CHECK,N_GUARD,P_SPINQ(e)::QAR2(H),XQ(e)
      • Refutation
        • S(h);XQ(H)
  • Actual
    • R(G);
    • Threat
      • B(E)
    • Vars
      • Q(e);CHECK,OGATE::QAB1(H),XQ(e)
      • S(h);N_GUARD::QAR(H),XP(f)
      • P(f);SBLOCK::R(G)
      • P(f);OGATE::QAB(H)
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