MESON Chess Problem Database

Problem Display
PID: 89290 (3N3r/2KP1Ppb/6kp/2P2R2/1p1p1p2/3Q1R2/1B2Pr1b/8 w - - 0 1)

Velimirovic, Milan

The Problemist, 1996

3N3r/2KP1Ppb/6kp/2P2R2/1p1p1p2/3Q1R2/1B2Pr1b/8

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re8
      • 2.fxe8Q#
      • 2.fxe8B#
    • 1...Bg8
      • 2.f8S#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Qe6#
      • 1...Bg8
        • 2.f8S#
      • 1...Re8
        • 2.fxe8Q#
        • 2.fxe8B#
      • 1...Rxe2!
    • 1.f8Q?
      • threat
        • 2.Rd5#
        • 2.Re5#
        • 2.Qa6#
        • 2.Qd6#
        • 2.Qf7#
      • 1...Rxe2
        • 2.Qf7#
      • 1...Rxf3
        • 2.Qa6#
        • 2.Qd6#
        • 2.Qf7#
      • 1...Bg8
        • 2.Rd5#
        • 2.Re5#
      • 1...h5
        • 2.Qa6#
        • 2.Qd6#
      • 1...Rxf8!
  • Keys
    • 1.e4!
      • threat
        • 2.Qa6#
      • 1...fxe4 ep+
        • 2.Re5#
      • 1...dxe4 ep
        • 2.Rd5#
      • 1...Bg8
        • 2.f8S#
      • 1...Re8
        • 2.fxe8Q#
        • 2.fxe8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(j);OGATE::PXR(j)=Q
    • B(i);S_CUTR(j)::P=S
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • B(i);S_CUTR(j)::P=S
        • R(j);OGATE::PXR(j)=Q
      • Refutation
        • R(a);XP(B)
    • Try
      • P(I);
      • Threat
        • DUALS(5)
      • Vars
        • R(a);XP(B)::QAB1(I)
      • Refutation
        • R(j);XQ(I)
  • Actual
    • P(B);
    • Threat
      • QAR(C)
    • Vars
      • P(e);CHECK,EP,OGATEB,XP(B)::QAB(C)+R(F)
      • P(d);EP,OGATEB,XP(B)::QAB(C)+R(F)
      • B(i);S_CUTR(j)::P=S
      • R(j);OGATE::PXR(j)=Q
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