MESON Chess Problem Database

Problem Display
PID: 52683 (2Rr3q/1nP1Q3/6b1/1p3p2/3k1NR1/1B3PB1/N3P3/3K2b1 w - - 0 1)

Mladenovic, Miodrag

1st Place, Liga Problemista, 1997

2Rr3q/1nP1Q3/6b1/1p3p2/3k1NR1/1B3PB1/N3P3/3K2b1

#2

11 + 8

56 The Problemist 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Bf2
      • 2.Bxf2#
    • 1...Bh2
      • 2.Bf2#
      • 2.e3#
    • 1...Be3
      • 2.Se6#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Se6#
      • 1...Be3+
        • 2.Qxe3#
      • 1...Qh6!
    • 1.Sg2+?
      • 1...fxg4
        • 2.Qb4#
      • 1...f4!
    • 1.Sd5+?
      • 1...fxg4
        • 2.Qb4#
      • 1...f4!
    • 1.Sxg6+?
      • 1...f4
        • 2.Rxf4#
      • 1...fxg4!
    • 1.Qc5+?
      • 1...Kxc5+
        • 2.cxd8Q#
      • 1...Sxc5!
    • 1.Qe3+?
      • 1...Bxe3
        • 2.Se6#
      • 1...Kxe3+!
    • 1.Qe4+?
      • 1...Kc5+
        • 2.cxd8Q#
      • 1...fxe4!
    • 1.cxd8Q+?
      • 1...Sd6
        • 2.Qb6#
        • 2.Qdxd6#
        • 2.Qxh8#
      • 1...Sxd8
        • 2.Qc5#
      • 1...Qxd8!
    • 1.cxd8R+?
      • 1...Sd6
        • 2.Rxd6#
      • 1...Sxd8
        • 2.Qc5#
      • 1...Qxd8!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Se6#
      • 1...Ke3+
        • 2.Sd5#
      • 1...Kc5+
        • 2.cxd8Q#
      • 1...Ke5+
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::B(F),XB(a)
    • B(a);SBLOCK::R(H)+S(G),DCHECK
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • R(H)+S(G),DCHECK
      • Vars
        • B(a);CHECK,N_GUARD::QAB1(J),XB(a)
      • Refutation
        • Q(h);P_PINS(G)
    • Try
      • S(G);CHECK
      • Vars
        • P(d);XR(H)::QAR2(J)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • S(G);CHECK
      • Vars
        • P(d);XR(H)::QAR2(J)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • S(G);CHECK,XB(e)
      • Vars
        • P(d);P_SPINP(d)::R(H),XP(d)
      • Refutation
        • P(d);XR(H)
    • Try
      • Q(J);CHECK
      • Vars
        • K(b);CHECK,S_FLIGHT,XQ(J)::PXR(g)=Q
      • Refutation
        • S(f);XQ(J)
    • Try
      • Q(J);CHECK
      • Vars
        • B(a);SBLOCK,XQ(J)::R(H)+S(G),DCHECK
      • Refutation
        • K(b);CHECK,S_FLIGHT,XQ(J)
    • Try
      • Q(J);CHECK
      • Vars
        • K(b);CHECK,S_FLIGHT::PXR(g)=Q
      • Refutation
        • P(d);XQ(J)
    • Try
      • P(I);CHECK,XR(g)
      • Vars
        • S(f);XQ(I)::QAB1(J)
      • Refutation
        • Q(h);XQ(I)
    • Try
      • P(I);CHECK,XR(g)
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::R(I),XS(f)
        • S(f);XR(I)::QAB1(J)
      • Refutation
        • Q(h);XR(I)
  • Actual
    • Q(J);
    • Threat
      • R(H)+S(G),DCHECK
    • Vars
      • K(b);CHECK,S_FLIGHT::QAB(J)+S(G),DCHECK
      • K(b);CHECK,P_SPINP(d),S_FLIGHT::PXR(g)=Q
      • K(b);CHECK,P_SPINP(d),S_FLIGHT::B(F)+S(G),DCHECK
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