MESON Chess Problem Database

Problem Display
PID: 235288 (8/3Q4/1pp2p2/1b2p2q/1N2k2p/1pP3p1/4N3/2BB1RK1 w - - 0 1)

Hoffmann, Fritz

Schach, 1982

8/3Q4/1pp2p2/1b2p2q/1N2k2p/1pP3p1/4N3/2BB1RK1

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe2
      • 2.Qf5#
    • 1...Qg4
      • 2.Qxg4#
    • 1...Qf7
      • 2.Qg4#
      • 2.Qf5#
    • 1...Qe8
      • 2.Qg4#
      • 2.Qf5#
    • 1...Qf5
      • 2.Qxf5#
    • 1...Qh6
      • 2.Qf5#
    • 1...Qh7
      • 2.Qg4#
    • 1...Qh8
      • 2.Qg4#
      • 2.Qf5#
    • 1...Bxe2
      • 2.Qxc6#
    • 1...Bd3
      • 2.Qxc6#
      • 2.Qxd3#
    • 1...Ba4
      • 2.Qd3#
    • 1...Ba6
      • 2.Qxc6#
    • 1...h3
      • 2.Sxg3#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Bc2+?
      • 1...Bd3
        • 2.Bxd3#
        • 2.Qxc6#
        • 2.Qxd3#
      • 1...bxc2!
  • Keys
    • 1.Re1!
      • threat
        • 2.Sxg3#
      • 1...Kf3
        • 2.Sd4#
      • 1...Qxe2
        • 2.Qg4#
      • 1...Bxe2
        • 2.Qd3#
      • 1...g2
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(g);N_GUARD,XS(E)::QAB1(H)
    • Q(g);N_GUARD::QAR2(H),XQ(g)
    • Q(g);N_GUARD::QAB1(H),XQ(g)
    • Q(g);N_GUARD::QAB1(H)
    • Q(g);N_GUARD::QAR2(H)
    • B(e);N_GUARD,XS(E)::QAB(H),XP(i)
    • B(e);N_GUARD::QAB1(H)
    • B(e);N_GUARD::QAB(H),XP(i)
    • P(d);N_GUARD::S(E),XP(b)
    • P(i);N_GUARD::QAB1(H)
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • P(a);XB(B)
  • Actual
    • R(C);
    • Threat
      • R(C)+S(E),DCHECK,XP(b)
    • Vars
      • K(c);S_FLIGHT::B(B)+S(E),DCHECK
      • Q(g);N_GUARD,P_SPINQ(g),XS(E)::QAR2(H)
      • B(e);N_GUARD,P_SPINB(e),XS(E)::QAB1(H)
      • P(b);::R(C)+S(E),DCHECK
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