MESON Chess Problem Database

Problem Display
PID: 52700 (5b2/KQ6/1p2k1P1/4P1R1/3p4/3p2N1/5qp1/1B2R3 w - - 0 1)

Hirschenson, Aaron

The Problemist, 2004

5b2/KQ6/1p2k1P1/4P1R1/3p4/3p2N1/5qp1/1B2R3

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe1
      • 2.Ba2#
      • 2.Qf7#
    • 1...Qg1
      • 2.Ba2#
      • 2.Qf7#
    • 1...Qe3
      • 2.Ba2#
      • 2.Qf7#
    • 1...Qxg3
      • 2.Ba2#
      • 2.Qf7#
    • 1...Qf1
      • 2.Ba2#
    • 1...Qa2+
      • 2.Bxa2#
    • 1...Qb2
      • 2.Qf7#
    • 1...Qc2
      • 2.Qf7#
    • 1...Qd2
      • 2.Qf7#
    • 1...Qe2
      • 2.Qf7#
    • 1...Qf4
      • 2.Ba2#
    • 1...Qf5
      • 2.Ba2#
    • 1...Qf6
      • 2.Ba2#
    • 1...Qf7
      • 2.Ba2#
      • 2.Qxf7#
    • 1...d2
      • 2.Ba2#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Qf7#
      • 1...Qa2+
        • 2.Bxa2#
      • 1...Qxe1
        • 2.Sxd4#
      • 1...Qxf5
        • 2.Ba2#
      • 1...Qe2
        • 2.Sxd4#
      • 1...Be7
        • 2.Sg7#
      • 1...Qe3!
    • 1.Re2?
      • threat
        • 2.Ba2#
      • 1...Qxe2
        • 2.Qf7#
      • 1...Qf3!
    • 1.Rf5?
      • threat
        • 2.Qf7#
      • 1...Qa2+
        • 2.Bxa2#
      • 1...Qxf5
        • 2.Ba2#
      • 1...Be7!
    • 1.Qc6+?
      • 1...Bd6
        • 2.Qxd6#
      • 1...Ke7!
  • Keys
    • 1.Se2!
      • threat
        • 2.Ba2#
      • 1...Qxe2
        • 2.Qf7#
      • 1...Qf5
        • 2.Sxd4#
      • 1...Qf3
        • 2.Sxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::B(A)
    • Q(a);CHECK,N_GUARD::B(A),XQ(a)
    • Q(a);N_GUARD::QAB1(H)
    • P(c);S_CUTQ(a)::B(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(H)
      • Vars
        • Q(a);CHECK,N_GUARD::B(A),XQ(a)
        • Q(a);N_GUARD,XR(B)::S(C),XP(d)
        • Q(a);N_GUARD,XS(C)::B(A)
        • Q(a);N_GUARD::S(C),XP(d)
        • B(g);N_GUARD::S(C)
      • Refutation
        • Q(a);
    • Try
      • R(B);
      • Threat
        • B(A)
      • Vars
        • Q(a);N_GUARD,XR(B)::QAB1(H)
      • Refutation
        • Q(a);
    • Try
      • R(E);
      • Threat
        • QAB1(H)
      • Vars
        • Q(a);CHECK,N_GUARD::B(A),XQ(a)
        • Q(a);N_GUARD,XR(E)::B(A)
      • Refutation
        • B(g);
    • Try
      • Q(H);CHECK
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::QAR1(H),XB(g)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • B(A)
    • Vars
      • Q(a);N_GUARD,XS(C)::QAB1(H)
      • Q(a);N_GUARD::S(C),XP(d)
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