MESON Chess Problem Database

Problem Display
PID: 262390 (r1n2Bbq/1R3B1p/p1Q1p3/p1PPP3/P1kNKRNb/2p1P2r/2P5/8 w - - 0 1)

Mladenovic, Slobodan

3rd Prize, Europe Echecs, 1979

r1n2Bbq/1R3B1p/p1Q1p3/p1PPP3/P1kNKRNb/2p1P2r/2P5/8

#2

14 + 12

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5+
      • 2.Sxe5#
    • 1...Rxe3+
      • 2.Sxe3#
    • 1...Rb8
      • 2.Qxa6#
    • 1...Sb6
      • 2.cxb6#
    • 1...Sd6+
      • 2.cxd6#
    • 1...exd5+
      • 2.Qxd5#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sxa5#
      • 1...Qxe5+
        • 2.Kxe5#
        • 2.Sxe5#
      • 1...Rxe3+
        • 2.Kxe3#
        • 2.Sxe3#
      • 1...Sd6+
        • 2.cxd6#
      • 1...exd5+
        • 2.Kf5#
        • 2.Qxd5#
      • 1...Sb6
        • 2.cxb6#
      • 1...Bd8!
    • 1.dxe6?
      • threat
        • 2.Qd5#
      • 1...Qxe5+
        • 2.Sxe5#
      • 1...Rxe3+
        • 2.Sxe3#
      • 1...Sd6+
        • 2.cxd6#
      • 1...Sb6
        • 2.cxb6#
      • 1...Se7!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sa3#
      • 1...Qxe5+
        • 2.Kxe5#
      • 1...Rxe3+
        • 2.Kxe3#
      • 1...Sd6+
        • 2.Sxd6#
      • 1...exd5+
        • 2.Kf5#
      • 1...Kb4
        • 2.Kd3#
      • 1...axb5
        • 2.Qxb5#
      • 1...Sb6
        • 2.cxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(l);CHECK,XP(J)::S(G),XQ(l)
    • R(b);CHECK,XP(B)::S(G),XR(b)
    • R(i);N_GUARD::QAB(K),XP(f)
    • S(j);OGATE::QAR(K)+P(H),XS(j)
    • S(j);CHECK,OGATE::QAR(K)+P(H),XS(j)
    • P(g);CHECK,OGATE,P_SPINP(g),XP(I)::QAB1(K),XP(g)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D),XP(e)
      • Vars
        • S(j);CHECK,OGATE::QAR(K)+P(H),XS(j)
        • S(j);OGATE::QAR(K)+P(H),XS(j)
      • Refutation
        • B(d);
    • Try
      • P(I);XP(g)
      • Threat
        • QAB1(K)
      • Vars
        • Q(l);CHECK,XP(J)::S(G),XQ(l)
        • R(b);CHECK,XP(B)::S(G),XR(b)
        • S(j);CHECK,OGATE::QAR(K)+P(H),XS(j)
        • S(j);OGATE::QAR(K)+P(H),XS(j)
      • Refutation
        • S(j);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • Q(l);CHECK,XP(J)::R(F)+K(E),XQ(l)
      • R(b);CHECK,XP(B)::R(F)+K(E),XR(b)
      • S(j);CHECK,N_GUARD::S(D),XS(j)
      • P(g);CHECK,P_SPINP(g),XP(I)::R(F)+K(E)
      • K(c);P-FLIGHT::R(F)+K(E)
      • P(f);OGATE,XS(D)::QAB1(K),XP(f)
      • S(j);OGATE::QAR(K)+P(H),XS(j)
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