MESON Chess Problem Database

Problem Display
PID: 104648 (2RR4/p7/Kb1nP3/N1Nk4/5P2/2P2p1B/6pQ/8 w - - 0 1)

Velimirovic, Milan

Mat, 1979

2RR4/p7/Kb1nP3/N1Nk4/5P2/2P2p1B/6pQ/8

#2

10 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...g1Q
      • 2.Qa2#
    • 1...g1S
      • 2.Qa2#
      • 2.Qd2#
    • 1...g1B
      • 2.Qa2#
    • 1...g1R
      • 2.Qa2#
      • 2.Qd2#
    • 1...f2
      • 2.Bxg2#
      • 2.Qxg2#
  • Tries
    • 1.Qg1?
      • threat
        • 2.Qd4#
        • 2.Qd1#
        • 2.c4#
      • 1...Bxa5
        • 2.Qd4#
      • 1...Bxd8
        • 2.Qd4#
        • 2.Qd1#
      • 1...Bc7
        • 2.Qd4#
        • 2.c4#
      • 1...f2
        • 2.Bxg2#
        • 2.Qd1#
        • 2.Qxg2#
      • 1...Bxc5!
  • Keys
    • 1.Qxg2!
      • threat
        • 2.Qxf3#
        • 2.Qa2#
        • 2.Qd2#
        • 2.Qg5#
      • 1...Bxa5
        • 2.Qa2#
      • 1...Bxc5
        • 2.Qxf3#
      • 1...Bxd8
        • 2.Qd2#
      • 1...fxg2
        • 2.Bxg2#
      • 1...Bc7
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • P(a);OGATE::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • B(d);XS(E)::QAR1(A)
      • Refutation
        • B(d);XS(F)
  • Actual
    • Q(A);P_PINP(b),XP(a)
    • Threat
      • DUALS(4)
    • Vars
      • B(d);XS(E)::QAB(A)
      • B(d);XS(F)::QAB(A),XP(b)
      • B(d);N_SPINS(e),XR(J)::QAR(A)
      • P(b);N_SPINP(b),OGATE,XQ(A)::B(C),XP(b)
      • B(d);::QAR(A)
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