MESON Chess Problem Database

Problem Display
PID: 102434 (N1k2rRr/Pp3pp1/2qR2Pb/4BK2/8/4p2B/8/2Q5 w - - 0 1)

Mladenovic, Slobodan

Courrier des Echecs, 1989

N1k2rRr/Pp3pp1/2qR2Pb/4BK2/8/4p2B/8/2Q5

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2+
      • 2.Qxc2#
    • 1...Qc3
      • 2.Qxc3#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qc5
      • 2.Qxc5#
    • 1...Qc7
      • 2.Sb6#
      • 2.Qxc7#
    • 1...Rd8
      • 2.Rdxd8#
    • 1...Rh7
      • 2.Rxf8#
    • 1...b5
      • 2.Qxc6#
    • 1...b6
      • 2.Qxc6#
    • 1...fxg6+
      • 2.Kxg6#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Sb6#
      • 1...Qc2+
        • 2.Qxc2#
      • 1...b5
        • 2.Qxc6#
      • 1...b6
        • 2.Qxc6#
      • 1...fxg6+!
    • 1.Rd3?
      • threat
        • 2.Sb6#
      • 1...b5
        • 2.Qxc6#
      • 1...b6
        • 2.Qxc6#
      • 1...fxg6+!
    • 1.Rd4?
      • threat
        • 2.Sb6#
      • 1...Qc2+
        • 2.Qxc2#
      • 1...b5
        • 2.Qxc6#
      • 1...b6
        • 2.Qxc6#
      • 1...fxg6+!
    • 1.Rd8+?
      • 1...Rxd8
        • 2.Sb6#
      • 1...Kxd8!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Sb6#
      • 1...Qc2+
        • 2.Qxc2#
      • 1...fxg6+
        • 2.Ke4#
      • 1...b5
        • 2.Qxc6#
      • 1...b6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • Q(b);CHECK,OGATEB::QAR(A),XQ(b)
    • Q(b);OGATEB::QAR(A),XQ(b)
    • Q(b);OGATEB,P_PINB(C)::QAR(A),XQ(b)
    • R(h);N_GUARD::R1(E),XR(h)
    • R(i);N_GUARD::R(I),XR(h)
    • P(d);N_GUARD::QAR2(A),XQ(b)
    • P(e);CHECK,XP(F)::B(B)+K(D),XP(e)
  • Tries
    • Try
      • R(E);
      • Threat
        • S(H)
      • Vars
        • Q(b);CHECK,OGATEB::QAR(A),XQ(b)
        • P(d);N_GUARD::QAR2(A),XQ(b)
      • Refutation
        • P(e);CHECK,XP(F)
    • Try
      • R(E);
      • Threat
        • S(H)
      • Vars
        • P(d);N_GUARD::QAR2(A),XQ(b)
      • Refutation
        • P(e);CHECK,XP(F)
    • Try
      • R(E);
      • Threat
        • S(H)
      • Vars
        • Q(b);CHECK,OGATEB::QAR(A),XQ(b)
        • P(d);N_GUARD::QAR2(A),XQ(b)
      • Refutation
        • P(e);CHECK,XP(F)
    • Try
      • R(E);CHECK,N_PINR(h)
      • Vars
        • R(h);P_SPINR(h),XR(E)::S(H)
      • Refutation
        • K(g);N_SPINQ(b),P-FLIGHT,P_SPINR(h),XR(E)
  • Actual
    • R(E);
    • Threat
      • S(H)
    • Vars
      • Q(b);CHECK,OGATEB::QAR(A),XQ(b)
      • P(e);CHECK,N_GUARD,XP(F)::B(B)+K(D)
      • P(d);N_GUARD::QAR2(A),XQ(b)
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