MESON Chess Problem Database

Problem Display
PID: 158071 (8/B4R2/3p4/3k4/K4P2/QR1p4/3p4/3B4 w - - 0 1)

Pitkanen, Jorma

Best Problems, 2009

8/B4R2/3p4/3k4/K4P2/QR1p4/3p4/3B4

#2

7 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Bf3+?
      • 1...Kc4
        • 2.Rc3#
        • 2.Rb4#
        • 2.Rc7#
        • 2.Qb4#
      • 1...Ke6!
    • 1.Rxd3+?
      • 1...Kc4
        • 2.Rd4#
        • 2.Rc7#
        • 2.Qb3#
        • 2.Qc3#
      • 1...Ke4
        • 2.Bf3#
        • 2.Rd4#
      • 1...Kc6
        • 2.Rxd6#
        • 2.Qxd6#
        • 2.Qc3#
      • 1...Ke6!
    • 1.Rb5+?
      • 1...Kc4
        • 2.Rc7#
        • 2.Qb4#
        • 2.Qb3#
      • 1...Ke4
        • 2.Qb4#
      • 1...Kc6
        • 2.Qc3#
      • 1...Ke6!
    • 1.Qb4?
      • 1...Kc6
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qb7#
      • 1...Ke6!
    • 1.Qc5+?
      • 1...Ke4
        • 2.Rb4#
        • 2.Qd4#
        • 2.Qc4#
        • 2.Qf5#
      • 1...Ke6
        • 2.Qf5#
      • 1...dxc5!
    • 1.Qxd6+?
      • 1...Kc4
        • 2.Rc7#
        • 2.Qc5#
        • 2.Qxd3#
        • 2.Qd4#
        • 2.Qc6#
        • 2.Qe6#
      • 1...Ke4
        • 2.Rb4#
        • 2.Qe5#
        • 2.Qxd3#
        • 2.Qd4#
        • 2.Qc6#
        • 2.Qe6#
      • 1...Kxd6!
  • Keys
    • 1.Qa2!
      • 1...Kc4
        • 2.Ra3#
      • 1...Ke4
        • 2.Rb4#
      • 1...Kc6
        • 2.Rc3#
      • 1...Ke6
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);CHECK,XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • P(d);XQ(B)
    • Try
      • Q(B);CHECK,XP(d)
      • Refutation
        • K(c);P-FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(c);S_FLIGHT::QAB(B)+R(C)
      • K(c);S_FLIGHT::R(C)
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