MESON Chess Problem Database

Problem Display
PID: 215538 (2KB2B1/b7/kp6/3Q4/8/8/8/8 w - - 0 1)

Zimmer, Eligiusz

Suomen Shakki, 2001

2KB2B1/b7/kp6/3Q4/8/8/8/8

#2

4 + 3

15148 Sadier Collection 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Qa2#
      • 2.Qb7#
  • Tries
    • 1.Kc7?
      • 1...b5
        • 2.Qa2#
      • 1...Bb8+!
    • 1.Bc7?
      • 1...b5
        • 2.Qa2#
        • 2.Qb7#
      • 1...Bb8!
    • 1.Be6?
      • 1...b5
        • 2.Qa2#
        • 2.Qb7#
      • 1...Bb8!
    • 1.Bf7?
      • 1...b5
        • 2.Qa2#
        • 2.Qb7#
      • 1...Bb8!
    • 1.Bh7?
      • 1...b5
        • 2.Qa2#
        • 2.Qb7#
      • 1...Bb8!
    • 1.Qb3?
      • threat
        • 2.Qa4#
      • 1...b5
        • 2.Qa2#
        • 2.Qa3#
      • 1...Ka5!
    • 1.Qc4+?
      • 1...b5
        • 2.Qa2#
      • 1...Ka5!
    • 1.Qd3+?
      • 1...b5
        • 2.Qa3#
      • 1...Ka5!
    • 1.Qa5+?
      • 1...bxa5
        • 2.Bc4#
      • 1...Kxa5!
    • 1.Qe5?
      • 1...b5
        • 2.Qa1#
      • 1...Bb8!
    • 1.Qd7?
      • threat
        • 2.Qa4#
      • 1...b5
        • 2.Qb7#
      • 1...Ka5!
  • Keys
    • 1.Qc5!
      • 1...bxc5
        • 2.Bc4#
      • 1...Bb8
        • 2.Qxb6#
      • 1...b5
        • 2.Qa3#

Anticipated by 243830(1990)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(b);SBLOCK::QAR(A)
      • Refutation
        • B(c);CHECK
    • Try
      • B(C);
      • Refutation
        • B(c);
    • Try
      • B(D);
      • Refutation
        • B(c);
    • Try
      • B(D);
      • Refutation
        • B(c);
    • Try
      • B(D);
      • Refutation
        • B(c);
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(A);CHECK
      • Vars
        • P(b);P_SPINP(b),SBLOCK::QAR(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(A);CHECK
      • Vars
        • P(b);P_SPINP(b),SBLOCK::QAR(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(A);CHECK
      • Vars
        • P(b);XQ(A)::B(D)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b),XQ(A)
    • Try
      • Q(A);
      • Vars
        • P(b);SBLOCK::QAR(A)
      • Refutation
        • B(c);
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • P(b);::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
  • Actual
    • Q(A);
    • Vars
      • P(b);N_GUARD,XQ(A)::B(D)
      • B(c);N_GUARD::QAR1(A),XP(b)
      • P(b);SBLOCK::QAR(A)
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