MESON Chess Problem Database

Problem Display
PID: 156033 (8/1N6/Rp6/4n3/1kp5/8/2Q5/2bK1N2 w - - 0 1)

Pedler, Norman

Nederlandse Bond van Probleemvrienden, 1932

8/1N6/Rp6/4n3/1kp5/8/2Q5/2bK1N2

#2

5 + 5

1577 Jaarboek 1932

SOLUTION

  • SOUND
  • Sets
    • 1...Kb5
      • 2.Qa4#
    • 1...Bb2
      • 2.Qxb2#
    • 1...Bd2
      • 2.Qb2#
    • 1...Ba3
      • 2.Rxb6#
    • 1...Be3
      • 2.Qb2#
    • 1...Bf4
      • 2.Qb2#
    • 1...Bg5
      • 2.Qb2#
    • 1...Bh6
      • 2.Qb2#
    • 1...c3
      • 2.Qa4#
  • Tries
    • 1.Kxc1?
      • threat
        • 2.Qb2#
      • 1...Kb5
        • 2.Qa4#
      • 1...c3
        • 2.Qa4#
      • 1...Sd3+!
    • 1.Sd2?
      • 1...Kb5
        • 2.Qa4#
      • 1...Bxd2
        • 2.Qb2#
      • 1...Bb2
        • 2.Qxb2#
      • 1...Ba3
        • 2.Rxb6#
      • 1...Sd3
        • 2.Qxc4#
      • 1...Sf3
        • 2.Qxc4#
      • 1...Sg4
        • 2.Qxc4#
      • 1...Sc6
        • 2.Qxc4#
      • 1...Sg6
        • 2.Qxc4#
      • 1...Sd7
        • 2.Qxc4#
      • 1...Sf7
        • 2.Qxc4#
      • 1...c3
        • 2.Qb3#
        • 2.Qa4#
      • 1...b5!
    • 1.Qb1+?
      • 1...Bb2
        • 2.Qxb2#
      • 1...Kc3!
  • Keys
    • 1.Se3!
      • 1...Kb5
        • 2.Qa4#
      • 1...Bxe3
        • 2.Qb2#
      • 1...Sd3
        • 2.Qxc4#
      • 1...Bb2
        • 2.Qxb2#
      • 1...Bd2
        • 2.Qb2#
      • 1...Ba3
        • 2.Rxb6#
      • 1...Sf3
        • 2.Qxc4#
      • 1...Sg4
        • 2.Qxc4#
      • 1...Sc6
        • 2.Qxc4#
      • 1...Sg6
        • 2.Qxc4#
      • 1...Sd7
        • 2.Qxc4#
      • 1...Sf7
        • 2.Qxc4#
      • 1...c3
        • 2.Qa4#
      • 1...b5
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • K(b);P-FLIGHT::QAB1(C)
    • B(a);N_GUARD::QAR2(C),XB(a)
    • B(a);N_GUARD::QAR2(C)
    • B(a);SBLOCK::R(D),XP(e)
    • P(c);SBLOCK::QAR1(C)
  • Tries
    • Try
      • K(A);P-FLIGHT,XB(a)
      • Threat
        • QAR2(C)
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
        • P(c);SBLOCK::QAR1(C)
      • Refutation
        • S(d);CHECK
    • Try
      • S(B);
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
        • B(a);N_GUARD,XS(B)::QAR2(C)
        • B(a);N_GUARD::QAR2(C),XB(a)
        • B(a);SBLOCK::R(D),XP(e)
        • S(d);N_GUARD::QAR1(C),XP(c)
      • Refutation
        • P(e);
    • Try
      • Q(C);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR2(C),XB(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(b);P-FLIGHT::QAB1(C)
      • B(a);N_GUARD,XS(B)::QAR2(C)
      • S(d);N_GUARD::QAR1(C),XP(c)
      • B(a);N_GUARD::QAR2(C),XB(a)
      • B(a);N_GUARD::QAR2(C)
      • B(a);SBLOCK::R(D),XP(e)
      • P(c);SBLOCK::QAR1(C)
      • P(e);SBLOCK::S(B)
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