MESON Chess Problem Database

Problem Display
PID: 215539 (8/5K2/2p5/3kP3/7R/8/8/4Q1b1 w - - 0 1)

Zimmer, Eligiusz

Suomen Shakki, 2005

8/5K2/2p5/3kP3/7R/8/8/4Q1b1

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qa5#
    • 1...Bc5
      • 2.Qe4#
    • 1...c5
      • 2.Qe4#
  • Tries
    • 1.Qd2+?
      • 1...Kc5
        • 2.Qa5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Kxe5!
    • 1.Qxg1?
      • threat
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qc5#
      • 1...c5!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qd6#
      • 1...Kxe5
        • 2.Rh5#
      • 1...c5
        • 2.Qe4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bc5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::QAR2(A)
    • B(a);SBLOCK::QAB1(A)
    • P(c);SBLOCK::QAB1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • B(a);N_GUARD,P_SPINB(a)::QAR1(A),XB(a)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
    • Try
      • Q(A);XB(a)
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR2(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(C)::R(B)
      • P(c);SBLOCK::QAB1(A)
      • B(a);N_GUARD::QAR1(A),XB(a)
      • B(a);SBLOCK::QAB1(A)
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