MESON Chess Problem Database

Problem Display
PID: 91418 (4B2N/4rqpN/3pP2p/5n1k/3rR2P/3ppKp1/5BPR/3Q4 w - - 0 1)

Mladenovic, Miodrag

Mladenovic, Slobodan

3rd HM., Probleemblad, 1989

4B2N/4rqpN/3pP2p/5n1k/3rR2P/3ppKp1/5BPR/3Q4

#2

11 + 11

6490 yacpdb 2009
133 The Problemist Supplement 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qg6
      • 2.Bxg6#
    • 1...Sxh4+
      • 2.Kxe3#
    • 1...exf2
      • 2.Kf4#
    • 1...gxf2
      • 2.g4#
    • 1...gxh2
      • 2.g4#
    • 1...g5
      • 2.Sf6#
  • Tries
    • 1.Bxf7+?
      • 1...g6
        • 2.Sf6#
        • 2.Bxg6#
      • 1...Rxf7!
  • Keys
    • 1.Bxe3!
      • threat
        • 2.Kf4#
      • 1...Sxe3+
        • 2.Kxe3#
      • 1...Sxh4+
        • 2.Kxg3#
      • 1...Rxe4
        • 2.Kxe4#
      • 1...gxh2
        • 2.Kf2#
      • 1...g5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(j);OGATE::B(J),XQ(j)
    • S(e);CHECK,P_SPINS(e),XP(G)::QAB(A)+K(E),XP(b)
    • P(b);N_GUARD,XB(B)::QAB(A)+K(E)
    • P(c);OGATE,XB(B)::P(C)
    • P(c);OGATE,XR(D)::P(C)
    • P(k);N_GUARD::S(I)
  • Tries
    • Try
      • B(J);CHECK,XQ(j)
      • Refutation
        • R(i);XB(J)
  • Actual
    • B(B);XP(b)
    • Threat
      • QAB(A)+K(E)
    • Vars
      • S(e);CHECK,XB(B)::QAB(A)+K(E),XS(e)
      • S(e);CHECK,P_SPINS(e),XP(G)::QAB(A)+K(E),XP(c)
      • R(d);XR(F)::QAB(A)+K(E),XR(d)
      • P(c);XR(D)::QAB(A)+K(E)
      • P(k);N_GUARD::S(I)
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