MESON Chess Problem Database

Problem Display
PID: 105335 (8/1N6/8/8/2Pk1K2/2RP4/1n6/BQ3B2 w - - 0 1)

Velimirovic, Milan

Mezija, 1995

8/1N6/8/8/2Pk1K2/2RP4/1n6/BQ3B2

#2

8 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc3
      • 2.Qxb2#
    • 1...Sd1
      • 2.Qb6#
    • 1...Sxd3+
      • 2.Qxd3#
  • Tries
    • 1.Be2?
      • 1...Sxd3+
        • 2.Qxd3#
      • 1...Kxc3
        • 2.Qxb2#
      • 1...Sd1
        • 2.Qb6#
      • 1...Sa4
        • 2.Qg1#
      • 1...Sxc4!
    • 1.Bg2?
      • 1...Sxd3+
        • 2.Qxd3#
      • 1...Sxc4
        • 2.Rxc4#
      • 1...Sd1
        • 2.Qb6#
      • 1...Sa4
        • 2.Qg1#
      • 1...Kxc3!
    • 1.Qe1?
      • threat
        • 2.Qe5#
      • 1...Sxc4
        • 2.Qe4#
      • 1...Sxd3+!
  • Keys
    • 1.Qa2!
      • 1...Sxd3+
        • 2.Rxd3#
      • 1...Kxc3
        • 2.Qxb2#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Sd1
        • 2.Qa7#
      • 1...Sa4
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,P_SPINS(a),S_FLIGHT,XR(D)::QAB1(B),XS(a)
    • S(a);OGATE::QAB(B)
    • S(a);CHECK,OGATE,XP(E)::QAR1(B),XS(a)
  • Tries
    • Try
      • B(C);
      • Vars
        • S(a);CHECK,OGATE,XP(E)::QAR1(B),XS(a)
        • K(b);OGATEB,P_SPINS(a),S_FLIGHT,XR(D)::QAB1(B),XS(a)
        • S(a);OGATE::QAB(B)
        • S(a);::QAB(B)
      • Refutation
        • S(a);XP(F)
    • Try
      • B(C);
      • Vars
        • S(a);CHECK,OGATE,XP(E)::QAR1(B),XS(a)
        • S(a);OGATE,XP(F)::B(A)+R(D),DCHECK,XS(a)
        • S(a);OGATE::QAB(B)
        • S(a);::QAB(B)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT,XR(D)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • S(a);XP(F)::QAR1(B)
      • Refutation
        • S(a);CHECK,XP(E)
  • Actual
    • Q(B);
    • Vars
      • S(a);CHECK,OGATE,XP(E)::B(A)+R(D),DCHECK,XS(a)
      • K(b);OGATEB,P_SPINS(a),S_FLIGHT,XR(D)::QAB1(B),XS(a)
      • S(a);OGATE,XP(F)::QAR1(B),XS(a)
      • S(a);::QAB(B)
      • S(a);OGATE::QAB(B)
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