MESON Chess Problem Database

Problem Display
PID: 55128 (3B1Q2/2p5/2P1K3/3NpN1B/2P1k1nP/8/2PpppP1/3R1R2 w - - 0 1)

Stojnic, Dragan

The Problemist, 2004

3B1Q2/2p5/2P1K3/3NpN1B/2P1k1nP/8/2PpppP1/3R1R2

#2

13 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.Bf3#
    • 1...Sf6
      • 2.Bf3#
    • 1...Sh6
      • 2.Bf3#
  • Tries
    • 1.Rxf2?
      • threat
        • 2.Sc3#
      • 1...Sxf2
        • 2.Bf3#
      • 1...exd1S!
    • 1.Qa3?
      • threat
        • 2.Qd3#
        • 2.Qf3#
      • 1...exd1Q
        • 2.Qd3#
      • 1...exd1B
        • 2.Qd3#
      • 1...exf1Q
        • 2.Qf3#
      • 1...exf1B
        • 2.Qf3#
      • 1...Sh2
        • 2.Qd3#
        • 2.Qe3#
      • 1...Se3
        • 2.Bf3#
        • 2.Qd3#
        • 2.Qxe3#
      • 1...e1S!
    • 1.Qh6?
      • threat
        • 2.Sc3#
      • 1...Sxh6
        • 2.Bf3#
      • 1...exd1S!
  • Keys
    • 1.Sc3+!
      • 1...Kf4
        • 2.Bg5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(e);OGATE::B(I)
  • Tries
    • Try
      • R(B);XP(c)
      • Threat
        • S(G)
      • Vars
        • S(e);OGATE,XR(B)::B(I)
      • Refutation
        • P(b);XR(A)
    • Try
      • Q(M);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);XR(A)::QAB1(M)
        • P(b);XR(B)::QAB1(M)
      • Refutation
        • P(b);
    • Try
      • Q(M);
      • Threat
        • S(G)
      • Vars
        • S(e);OGATE,XQ(M)::B(I)
      • Refutation
        • P(b);XR(A)
  • Actual
    • S(G);CHECK
    • Vars
      • K(d);P-FLIGHT,P_SPINP(c)::B(L)
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