MESON Chess Problem Database

Problem Display
PID: 245517 (8/7Q/8/3K4/8/1p5R/4k3/4B3 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2003

8/7Q/8/3K4/8/1p5R/4k3/4B3

#2

4 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rh2+?
      • 1...Kd1
        • 2.Qb1#
      • 1...Kxe1
        • 2.Qb1#
      • 1...Ke3
        • 2.Qe4#
      • 1...Kf3
        • 2.Qe4#
      • 1...Kf1!
    • 1.Qc2+?
      • 1...Kxe1
        • 2.Rh1#
      • 1...Kf1
        • 2.Rh1#
        • 2.Qf2#
      • 1...bxc2!
    • 1.Qe4+?
      • 1...Kf1
        • 2.Rh1#
      • 1...Kd1!
  • Keys
    • 1.Re3+!
      • 1...Kd1
        • 2.Qb1#
      • 1...Kf1
        • 2.Qh1#
      • 1...Kxe3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(D)
        • K(a);P-FLIGHT,XB(A)::QAR(D)
        • K(a);P-FLIGHT::QAR1(D)
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(A)::R(B)
      • Refutation
        • P(b);XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::R(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(B);CHECK
    • Vars
      • K(a);S_FLIGHT::QAR2(D)
      • K(a);P-FLIGHT,XR(B)::QAR1(D)
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