MESON Chess Problem Database

Problem Display
PID: 99408 (7R/4B3/3Pk3/8/8/4K3/8/7Q w - - 0 1)

Sinisa, S

Magyar Sakkelet, 1995

7R/4B3/3Pk3/8/8/4K3/8/7Q

#2

5 + 1

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qe4#
    • 1...Kf5
      • 2.Qe4#
  • Tries
    • 1.Rh7?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kf5
        • 2.Qe4#
      • 1...Kd7!
    • 1.Rc8?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kf5
        • 2.Qe4#
      • 1...Kd7
        • 2.Qh3#
      • 1...Kf7!
    • 1.Rd8?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kf5
        • 2.Qe4#
      • 1...Kf7!
    • 1.Rf8?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kd7!
    • 1.Rg8?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kf5
        • 2.Qe4#
        • 2.Qd5#
      • 1...Kf7
        • 2.Qd5#
      • 1...Kd7!
    • 1.Qg2?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kf5
        • 2.Qe4#
      • 1...Kf7
        • 2.Qg8#
      • 1...Kd7!
    • 1.Qf3?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kd7!
    • 1.Qe4+?
      • 1...Kd7
        • 2.Rd8#
      • 1...Kf7!
    • 1.Qd5+?
      • 1...Kd7
        • 2.Rd8#
      • 1...Kxd5!
    • 1.Qc6?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kf5
        • 2.Qe4#
      • 1...Kf7!
    • 1.Qb7?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kf5
        • 2.Qe4#
      • 1...Kf7!
  • Keys
    • 1.Qa8!
      • 1...Ke5
        • 2.Qe4#
      • 1...Kf5
        • 2.Qe4#
      • 1...Kd7
        • 2.Qc8#
      • 1...Kf7
        • 2.Qg8#

Anticipated by 31378(1883), 193658(1915), 206705(1925), 106765(1955), 105390(1991)

This anticipates 199902(2017), 217416(2020)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(A)
    • K(a);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(E)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::QAB1(A)
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