MESON Chess Problem Database

Problem Display
PID: 232624 (1R3B1K/8/p1B4p/1p6/2k3nr/1Np3pQ/2P2p1b/q6n w - - 0 1)

Hoffmann, Fritz

Freie Presse, 1968

1R3B1K/8/p1B4p/1p6/2k3nr/1Np3pQ/2P2p1b/q6n

#2

7 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Qf1#
    • 1...Qf1
      • 2.Qxf1#
    • 1...Qa2
      • 2.Qf1#
    • 1...Qa3
      • 2.Qf1#
    • 1...Qa4
      • 2.Qf1#
    • 1...Qa5
      • 2.Qf1#
    • 1...Rh5
      • 2.Qxg4#
    • 1...Se5
      • 2.Qe6#
    • 1...g2
      • 2.Qd3#
    • 1...b4
      • 2.Rxb4#
  • Tries
    • 1.Bxh1?
      • threat
        • 2.Rc8#
      • 1...g2
        • 2.Qd3#
      • 1...Qa3
        • 2.Qf1#
      • 1...Qa5
        • 2.Qf1#
      • 1...Rh5
        • 2.Qxg4#
      • 1...Se5
        • 2.Qe6#
      • 1...b4
        • 2.Rxb4#
      • 1...Qxh1!
    • 1.Bf3?
      • threat
        • 2.Rc8#
      • 1...Qa3
        • 2.Qf1#
      • 1...Qa5
        • 2.Qf1#
      • 1...Rh5
        • 2.Qxg4#
      • 1...Se5
        • 2.Qe6#
      • 1...b4
        • 2.Rxb4#
      • 1...g2!
    • 1.Be4?
      • threat
        • 2.Rc8#
      • 1...Qa3
        • 2.Qf1#
      • 1...Qa5
        • 2.Qf1#
      • 1...Se5
        • 2.Qe6#
      • 1...g2
        • 2.Qd3#
      • 1...b4
        • 2.Rxb4#
      • 1...Rh5!
    • 1.Bb7?
      • threat
        • 2.Rc8#
      • 1...Qa3
        • 2.Qf1#
      • 1...Qa5
        • 2.Qf1#
      • 1...Rh5
        • 2.Qxg4#
      • 1...Se5
        • 2.Qe6#
      • 1...g2
        • 2.Qd3#
      • 1...b4!
    • 1.Rc8?
      • threat
        • 2.Bxh1#
        • 2.Bg2#
        • 2.Bf3#
        • 2.Be4#
        • 2.Bb7#
        • 2.Ba8#
      • 1...Qa3
        • 2.Qf1#
      • 1...Qa5
        • 2.Qf1#
      • 1...Rh5
        • 2.Qxg4#
      • 1...Se5
        • 2.Qe6#
      • 1...g2
        • 2.Qd3#
      • 1...b4!
  • Keys
    • 1.Ba8!
      • threat
        • 2.Rc8#
      • 1...Qa3
        • 2.Qf1#
      • 1...Qa5
        • 2.Qf1#
      • 1...Rh5
        • 2.Qxg4#
      • 1...Se5
        • 2.Qe6#
      • 1...g2
        • 2.Qd3#
      • 1...b4
        • 2.Rxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::QAB(C)
    • Q(a);N_GUARD::QAB(C),XQ(a)
    • R(i);N_GUARD::QAR(C),XS(h)
    • S(h);OGATE::QAB(C)
    • P(f);OGATE::QAB1(C)
    • P(j);OGATE::R1(E),XP(j)
  • Tries
    • Try
      • B(D);XS(b)
      • Threat
        • R(E)
      • Vars
        • P(f);OGATE::QAB1(C)
        • Q(a);N_GUARD::QAB(C)
        • R(i);N_GUARD::QAR(C),XS(h)
        • S(h);OGATE::QAB(C)
        • P(j);OGATE::R1(E),XP(j)
      • Refutation
        • Q(a);XB(D)
    • Try
      • B(D);
      • Threat
        • R(E)
      • Vars
        • Q(a);N_GUARD::QAB(C)
        • R(i);N_GUARD::QAR(C),XS(h)
        • S(h);OGATE::QAB(C)
        • P(j);OGATE::R1(E),XP(j)
      • Refutation
        • P(f);
    • Try
      • B(D);
      • Threat
        • R(E)
      • Vars
        • Q(a);N_GUARD::QAB(C)
        • S(h);OGATE::QAB(C)
        • P(f);OGATE::QAB1(C)
        • P(j);OGATE::R1(E),XP(j)
      • Refutation
        • R(i);
    • Try
      • B(D);
      • Threat
        • R(E)
      • Vars
        • Q(a);N_GUARD::QAB(C)
        • R(i);N_GUARD::QAR(C),XS(h)
        • S(h);OGATE::QAB(C)
        • P(f);OGATE::QAB1(C)
      • Refutation
        • P(j);
    • Try
      • R(E);
      • Threat
        • DUALS(6)
      • Vars
        • Q(a);N_GUARD::QAB(C)
        • R(i);N_GUARD::QAR(C),XS(h)
        • S(h);OGATE::QAB(C)
        • P(f);OGATE::QAB1(C)
      • Refutation
        • P(j);
  • Actual
    • B(D);
    • Threat
      • R(E)
    • Vars
      • Q(a);N_GUARD::QAB(C)
      • R(i);N_GUARD::QAR(C),XS(h)
      • S(h);OGATE::QAB(C)
      • P(f);OGATE::QAB1(C)
      • P(j);OGATE::R1(E),XP(j)
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