MESON Chess Problem Database

Problem Display
PID: 206518 (5Q2/K7/p1p5/2Nk4/6R1/2rp4/8/8 w - - 0 1)

Kriuckov, Sergey Petrovic

64 Shakhmatnoe obozrenie, 1925

5Q2/K7/p1p5/2Nk4/6R1/2rp4/8/8

#2

4 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Rd4+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Kxd4!
    • 1.Rg5+?
      • 1...Kd4
        • 2.Qf4#
      • 1...Kc4!
    • 1.Qf4?
      • threat
        • 2.Rg5#
        • 2.Qd4#
      • 1...Kxc5
        • 2.Rg5#
        • 2.Qe5#
      • 1...Rc4
        • 2.Rg5#
      • 1...Rxc5!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qd4#
      • 1...Kxc5
        • 2.Qe5#
      • 1...Rxc5
        • 2.Rd4#
      • 1...Rc4
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(D)
      • Refutation
        • K(c);P-FLIGHT,XR(A)
    • Try
      • R(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::R(A)
      • Refutation
        • R(a);XS(B)
  • Actual
    • Q(D);
    • Threat
      • QAR1(D)
    • Vars
      • K(c);P-FLIGHT,XS(B)::QAR2(D)
      • R(a);SBLOCK,XS(B)::R1(A)
      • R(a);SBLOCK::R(A)
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