MESON Chess Problem Database

Problem Display
PID: 99371 (4N3/4pp2/3RpP2/3p1NK1/1Q1Pk3/Rb3p2/2PpB1P1/q1bnn3 w - - 0 1)

Rozsa, Andor

Sakkelet, 1997

4N3/4pp2/3RpP2/3p1NK1/1Q1Pk3/Rb3p2/2PpB1P1/q1bnn3

#2

11 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Qxd4#
    • 1...Ba2
      • 2.Sg3#
    • 1...Bxc2
      • 2.Sg3#
    • 1...Ba4
      • 2.Sg3#
    • 1...Se3
      • 2.Sg3#
    • 1...Sxc2
      • 2.gxf3#
    • 1...Sxg2
      • 2.Bd3#
    • 1...Sd3
      • 2.Bxd3#
      • 2.Bxf3#
      • 2.cxd3#
      • 2.gxf3#
    • 1...exd6
      • 2.Sexd6#
    • 1...exf6+
      • 2.Sxf6#
  • Tries
    • 1.fxe7?
      • threat
        • 2.Sf6#
      • 1...f6+
        • 2.Sxf6#
      • 1...Qxd4
        • 2.Qxd4#
      • 1...exf5!
  • Keys
    • 1.Rxd5!
      • threat
        • 2.Re5#
      • 1...exf6+
        • 2.Sxf6#
      • 1...Kxd5
        • 2.Qb7#
      • 1...Qxd4
        • 2.Qxd4#
      • 1...Bxd5
        • 2.Sg3#
      • 1...exd5
        • 2.Qxe7#
      • 1...Sd3
        • 2.Bxf3#
      • 1...e5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • Q(a);OGATE,P_SPINQ(a),XP(F)::QAR1(E),XQ(a)
    • B(f);::S(G)
    • B(f);XP(A)::S(G)
    • S(c);SBLOCK::S(G)
    • S(d);N_GUARD,XP(A)::P(C),XP(g)
    • S(d);N_GUARD,XP(C)::B(B)
    • P(k);XR(I)::S(K),XP(k)
    • P(k);CHECK,XP(J)::S(K),XP(k)
  • Tries
    • Try
      • P(J);XP(k)
      • Threat
        • S(K)
      • Vars
        • P(l);CHECK::S(K),XP(l)
        • Q(a);OGATE,P_SPINQ(a),XP(F)::QAR1(E),XQ(a)
      • Refutation
        • P(j);XS(G)
  • Actual
    • R(I);XP(i)
    • Threat
      • R1(I)
    • Vars
      • P(k);CHECK,XP(J)::S(K),XP(k)
      • K(h);OGATEB,S_FLIGHT,XR(I)::QAB(E)
      • Q(a);OGATE,P_SPINQ(a),XP(F)::QAR1(E),XQ(a)
      • B(f);SBLOCK,XR(I)::S(G)
      • P(j);OGATEB,SBLOCK,XR(I)::QAR(E),XP(k)
      • S(d);N_GUARD::B(B),XP(g)
      • P(j);::R1(I),XP(j)
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