MESON Chess Problem Database

Problem Display
PID: 190244 (2K5/2p1B3/1PppkPPp/5pp1/2PP4/5p1N/4p3/4Q3 w - - 0 1)

Markkola, Paavo Johannes

Suomen Shakki, 1982

2K5/2p1B3/1PppkPPp/5pp1/2PP4/5p1N/4p3/4Q3

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...f2
      • 2.Qxe2#
    • 1...g4
      • 2.Sf4#
    • 1...h5
      • 2.Sxg5#
  • Tries
    • 1.Qd2?
      • threat
        • 2.Qe3#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...f4!
    • 1.Qf2?
      • threat
        • 2.Qe3#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...f4!
    • 1.Qc3?
      • threat
        • 2.Qe3#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...f4!
    • 1.Qc1?
      • threat
        • 2.Qe3#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...f4!
    • 1.Qg1?
      • threat
        • 2.Qe3#
      • 1...f4
        • 2.Qg4#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...f2!
  • Keys
    • 1.Qg3!
      • 1...cxb6
        • 2.Qxd6#
      • 1...f4
        • 2.Qg4#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...f2
        • 2.Qe3#
      • 1...g4
        • 2.Sf4#
      • 1...c5
        • 2.d5#
      • 1...d5
        • 2.Qe5#
      • 1...h5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::QAR(A),XP(a)
    • P(d);N_GUARD::S(B)
    • P(h);N_GUARD::S(B),XP(d)
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR(A)
      • Vars
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(c);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR(A)
      • Vars
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(c);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR(A)
      • Vars
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(c);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR(A)
      • Vars
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(c);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR(A)
      • Vars
        • P(c);OGATEB::QAB(A)
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(b);
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • P(i);N_GUARD,XP(E)::QAR1(A),XP(f)
      • P(c);OGATEB::QAB(A)
      • P(a);OGATEB::QAR(A),XQ(a)
      • P(a);OGATEB::QAR(A),XS(a)
      • P(a);OGATEB::QAR(A),XB(a)
      • P(a);OGATEB::QAR(A),XR(a)
      • P(b);OGATE::QAR(A)
      • P(d);N_GUARD::S(B)
      • P(e);N_GUARD::P(D)
      • P(f);N_GUARD::QAR1(A)
      • P(h);N_GUARD::S(B),XP(d)
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