MESON Chess Problem Database

Problem Display
PID: 175104 (4Q3/8/5r1R/3k4/5R2/4B3/8/4K3 w - - 0 1)

Mach, Julius Zdenek

Sachove listy, 1902

4Q3/8/5r1R/3k4/5R2/4B3/8/4K3

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4
      • 2.Qe6#
    • 1...Rf5
      • 2.Qb5#
      • 2.Qe4#
      • 2.Qe6#
    • 1...Ra6
      • 2.Qb5#
      • 2.Qh5#
      • 2.Qe4#
    • 1...Rb6
      • 2.Qh5#
      • 2.Qe4#
    • 1...Rc6
      • 2.Qh5#
      • 2.Qe4#
    • 1...Rd6
      • 2.Rh5#
      • 2.Qb5#
      • 2.Qe4#
    • 1...Re6
      • 2.Qxe6#
    • 1...Rf7
      • 2.Qb5#
      • 2.Qe4#
      • 2.Qe6#
    • 1...Rf8
      • 2.Qb5#
      • 2.Qe4#
      • 2.Qe6#
  • Tries
    • 1.Ba7?
      • threat
        • 2.Rd4#
      • 1...Re6+
        • 2.Qxe6#
      • 1...Rxf4
        • 2.Qe6#
      • 1...Rb6
        • 2.Qh5#
      • 1...Kd6!
    • 1.Rf5+?
      • 1...Kd6
        • 2.Bf4#
      • 1...Rxf5
        • 2.Qe6#
      • 1...Kc4!
    • 1.Qd7+?
      • 1...Rd6
        • 2.Rh5#
        • 2.Qb5#
        • 2.Qxd6#
      • 1...Ke5!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Rd4#
      • 1...Re6+
        • 2.Qxe6#
      • 1...Kd6
        • 2.Rd4#
      • 1...Rxf4
        • 2.Qe6#
      • 1...Rxb6
        • 2.Qh5#

This is a version of 120108

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD,XR(C)::QAB1(E)
    • R(b);N_GUARD,P_PINB(B)::QAB1(E),XR(b)
  • Tries
    • Try
      • B(B);
      • Threat
        • R1(C)
      • Vars
        • R(b);CHECK,N_GUARD::QAB1(E),XR(b)
        • R(b);N_GUARD,XR(C)::QAB1(E)
        • R(b);N_GUARD::QAR(E)
      • Refutation
        • K(a);P-FLIGHT,P_SPINR(b)
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINR(b)::B(B)
        • R(b);XR(C)::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(B);
    • Threat
      • R1(C)
    • Vars
      • R(b);CHECK,N_GUARD::QAB1(E),XR(b)
      • K(a);P-FLIGHT,P_SPINR(b)::R(C)
      • R(b);N_GUARD,XR(C)::QAB1(E)
      • R(b);N_GUARD,XB(B)::QAR(E)
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