MESON Chess Problem Database

Problem Display
PID: 96793 (8/2b5/2R1R3/r2k3K/3P4/2Q5/b7/8 w - - 0 1)

Vukcevich, Milan Radoje

US Problem Bulletin, 1990

8/2b5/2R1R3/r2k3K/3P4/2Q5/b7/8

#2

5 + 4

6490 yacpdb 2009
5454 Near Snap 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Qc5#
    • 1...Ra4
      • 2.Qc5#
    • 1...Rc5
      • 2.Qxc5#
    • 1...Ra6
      • 2.Qc5#
    • 1...Ra7
      • 2.Qc5#
    • 1...Ra8
      • 2.Qc5#
    • 1...Bb1
      • 2.Qc4#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Be5
      • 2.Rxe5#
    • 1...Bb6
      • 2.Rcd6#
      • 2.Re5#
    • 1...Bd6
      • 2.Rcxd6#
    • 1...Bd8
      • 2.Rcd6#
      • 2.Re5#
  • Tries
    • 1.Qxa5+?
      • 1...Kxd4
        • 2.Qd2#
      • 1...Bxa5!
    • 1.Qe3?
      • threat
        • 2.Qe4#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bb1!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qe4#
      • 1...Rc5
        • 2.dxc5#
      • 1...Bb1
        • 2.Qc4#
      • 1...Be5
        • 2.dxe5#

Anticipated by 276108(1957)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::QAR1(A)
    • R(b);N_GUARD::QAR1(A),XR(b)
    • B(a);N_GUARD::QAB1(A)
    • B(a);N_GUARD::QAB1(A),XB(a)
    • B(d);N_GUARD::R1(E),XB(d)
    • B(d);N_GUARD::R1(D),XB(d)
  • Tries
    • Try
      • Q(A);CHECK,XR(b)
      • Vars
        • K(c);OGATEB,P-FLIGHT,XP(B)::QAR2(A)
      • Refutation
        • B(d);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • R(b);N_GUARD::R1(D),XR(b)
        • B(d);N_GUARD::QAR1(A),XB(d)
      • Refutation
        • B(a);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • R(b);OGATE::QAR(A)+P(B),XR(b)
      • B(a);N_GUARD::QAB1(A)
      • B(d);OGATE::QAR(A)+P(B),XB(d)
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