MESON Chess Problem Database

Problem Display
PID: 193362 (2R5/8/8/5Q2/3k3q/1K2p3/1P6/2r5 w - - 0 1)

Ursic, Andrej Anton

2nd HM., Pittsburgh Gazette-Times TT, 1914

2R5/8/8/5Q2/3k3q/1K2p3/1P6/2r5

#2

4 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Rd8#
    • 1...Qf2
      • 2.Rd8#
    • 1...Qd8
      • 2.Rxd8#
    • 1...Qh3
      • 2.Rd8#
    • 1...Qg4
      • 2.Rd8#
    • 1...Qh5
      • 2.Rd8#
    • 1...Ra1
      • 2.Rc4#
    • 1...Rb1
      • 2.Rc4#
    • 1...Rd1
      • 2.Rc4#
    • 1...Re1
      • 2.Rc4#
    • 1...Rf1
      • 2.Rc4#
    • 1...Rg1
      • 2.Rc4#
    • 1...Rh1
      • 2.Rc4#
    • 1...Rc3+
      • 2.bxc3#
    • 1...Rc4
      • 2.Rxc4#
  • Keys
    • 1.Rc3!
      • threat
        • 2.Rd3#
      • 1...Rxc3+
        • 2.bxc3#
      • 1...Qe4
        • 2.Qc5#
      • 1...Rd1
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 13
  • Sets
    • Q(d);N_GUARD::R(D)
    • Q(d);N_GUARD::R(D),XQ(d)
    • R(a);N_GUARD::R1(D)
    • R(a);N_GUARD,P_PINP(A)::R1(D)
    • R(a);CHECK,OGATE::P(A),XR(a)
    • R(a);N_GUARD::R1(D),XR(a)
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • R(a);CHECK,OGATE,XR(D)::P(A),XR(a)
      • Q(d);SBLOCK::QAB1(C)
      • R(a);N_GUARD::R1(D)
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