MESON Chess Problem Database

Problem Display
PID: 104647 (8/3K4/P2P4/1k6/RBR1P3/8/3P1N2/2Q5 w - - 0 1)

Velimirovic, Milan

Mat, 1979

8/3K4/P2P4/1k6/RBR1P3/8/3P1N2/2Q5

#2

10 + 1

6490 yacpdb 2009
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Rd4?
      • threat
        • 2.Qc6#
      • 1...Kb6
        • 2.Qc5#
      • 1...Kxa4!
    • 1.Rc5+?
      • 1...Kxa4
        • 2.Qa3#
      • 1...Kb6!
    • 1.Rc7?
      • threat
        • 2.Qc6#
      • 1...Kb6
        • 2.Rb7#
        • 2.Qc5#
        • 2.Qc6#
      • 1...Kxa4!
    • 1.Rc8?
      • threat
        • 2.Qc6#
      • 1...Kb6
        • 2.Qc5#
      • 1...Kxa4!
    • 1.Qa3?
      • 1...Kxc4
        • 2.Qd3#
      • 1...Kb6!
    • 1.Qb1?
      • threat
        • 2.Ba3#
        • 2.Bc3#
        • 2.Bc5#
      • 1...Kxc4
        • 2.Ba3#
        • 2.Qd3#
      • 1...Kb6
        • 2.Bc5#
      • 1...Kxa4!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Ba3#
        • 2.Bc3#
        • 2.Bc5#
      • 1...Kxa4
        • 2.Bc3#
      • 1...Kxc4
        • 2.Ba3#
      • 1...Kb6
        • 2.Bc5#

This anticipates 198447(1986)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • R(F);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(F);
      • Threat
        • QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • R(F);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(F)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • K(a);P-FLIGHT::QAR(A)+B(E),DCHECK
      • Refutation
        • K(a);S_FLIGHT,XR(D)
  • Actual
    • Q(A);
    • Threat
      • DUALS(3)
    • Vars
      • K(a);S_FLIGHT,XR(D)::R(F)+B(E)
      • K(a);S_FLIGHT,XR(F)::R(D)+B(E)
      • K(a);P-FLIGHT::QAR(A)+B(E),DCHECK
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