MESON Chess Problem Database

Problem Display
PID: 175130 (2Q5/8/P2pp3/2R1p1B1/4k2P/1P5P/4K3/8 w - - 0 1)

Meisling, Otto Simon

320 Danske Skakopgaver, 1902

2Q5/8/P2pp3/2R1p1B1/4k2P/1P5P/4K3/8

#2

8 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rc4+?
      • 1...Kd5
        • 2.Qb7#
        • 2.Qc6#
        • 2.Qa8#
      • 1...Kf5!
    • 1.Ra5?
      • 1...Kd4
        • 2.Qc4#
      • 1...Kf5
        • 2.Qc2#
      • 1...d5!
    • 1.Rb5?
      • 1...Kd4
        • 2.Qc4#
      • 1...Kf5
        • 2.Qc2#
      • 1...d5!
    • 1.Qxe6?
      • threat
        • 2.Rc4#
        • 2.Qg4#
      • 1...Kd4
        • 2.Rc4#
        • 2.Qc4#
        • 2.Qd5#
      • 1...d5
        • 2.Qg4#
      • 1...dxc5!
    • 1.Qb7+?
      • 1...Kd4
        • 2.Be3#
        • 2.Rc4#
        • 2.Qb4#
      • 1...Kf5
        • 2.Qh7#
      • 1...d5!
  • Keys
    • 1.Rd5!
      • 1...Kxd5
        • 2.Qc4#
      • 1...Kf5
        • 2.Qc2#
      • 1...exd5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • K(a);P_SPINP(d),S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::QAR1(H)
        • K(a);P_SPINP(b),S_FLIGHT::QAB(H)
      • Refutation
        • P(c);
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::QAR1(H)
        • K(a);P_SPINP(b),S_FLIGHT::QAB(H)
      • Refutation
        • P(c);
    • Try
      • Q(H);P_PINP(b),XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR2(H)
      • Refutation
        • P(c);XR(E)
    • Try
      • Q(H);CHECK
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAB(H)
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • R(E);
    • Vars
      • K(a);S_FLIGHT,XR(E)::QAB1(H)
      • K(a);P_SPINP(b),S_FLIGHT::QAB(H)
      • P(d);OGATE,SBLOCK,XR(E)::QAR2(H)
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