MESON Chess Problem Database

Problem Display
PID: 41100 (8/1Nq1RP2/k2p2R1/P5P1/1Q3K2/2PNB3/3P4/8 w - - 0 1)

Lindner, Laszlo

Rochade Europa, 1992

8/1Nq1RP2/k2p2R1/P5P1/1Q3K2/2PNB3/3P4/8

#2

12 + 3

4080 Mattbilder eines Lebens 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa5
      • 2.Qxa5#
    • 1...Qb6
      • 2.Qxb6#
    • 1...Qb8
      • 2.Sbc5#
      • 2.Qc4#
      • 2.Qb6#
    • 1...Qd8
      • 2.Sbc5#
      • 2.Qc4#
    • 1...Qxc3
      • 2.Qb6#
    • 1...Qc4+
      • 2.Qxc4#
    • 1...Qc5
      • 2.Sbxc5#
    • 1...Qd7
      • 2.Qb6#
    • 1...Qxe7
      • 2.Qb6#
    • 1...Qc8
      • 2.Qb6#
  • Tries
    • 1.Sdc5+?
      • 1...Qxc5
        • 2.Sxc5#
      • 1...Ka7!
    • 1.Sbc5+?
      • 1...Qxc5
        • 2.Sxc5#
      • 1...Ka7!
    • 1.Rxd6+?
      • 1...Qb6
        • 2.Sbc5#
        • 2.Qxb6#
      • 1...Qc6
        • 2.Sbc5#
        • 2.Rxc6#
        • 2.Qc4#
      • 1...Qxd6+!
    • 1.f8Q?
      • threat
        • 2.Qa8#
      • 1...Qc4+
        • 2.Qxc4#
      • 1...Qb6
        • 2.Qxb6#
      • 1...Qc5
        • 2.Sbxc5#
      • 1...Qb8
        • 2.Sbc5#
        • 2.Qc4#
        • 2.Qb6#
      • 1...Qd8
        • 2.Sbc5#
        • 2.Qc4#
      • 1...Qc8
        • 2.Qb6#
      • 1...Qxb7!
    • 1.f8R?
      • threat
        • 2.Ra8#
      • 1...Qc4+
        • 2.Qxc4#
      • 1...Qb6
        • 2.Qxb6#
      • 1...Qc5
        • 2.Sbxc5#
      • 1...Qb8
        • 2.Sbc5#
        • 2.Qc4#
        • 2.Qb6#
      • 1...Qd8
        • 2.Sbc5#
        • 2.Qc4#
      • 1...Qc8
        • 2.Qb6#
      • 1...Qxb7!
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Qb5#
      • 1...Qxd6+
        • 2.Rxd6#
      • 1...Qc4+
        • 2.Sxc4#
      • 1...Qxa5
        • 2.Ra7#
        • 2.Qb7#
      • 1...Qc6
        • 2.Ra7#
      • 1...Qb6
        • 2.Qxb6#
      • 1...Qb8
        • 2.Sc5#
      • 1...Qc5
        • 2.Sxc5#
      • 1...Qb7
        • 2.Sxb7#
      • 1...Qd7
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(c);OGATE,XP(G)::QAR1(E),XQ(c)
    • Q(c);N_GUARD,N_SPINP(b)::QAR1(E),XQ(c)
    • Q(c);N_GUARD,XP(B)::QAR1(E)
    • Q(c);CHECK,N_GUARD::QAB(E),XQ(c)
    • Q(c);N_GUARD::S(J),XQ(c)
    • Q(c);N_GUARD::QAR1(E)
    • Q(c);N_GUARD,XR(K)::QAR1(E)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • Q(c);XS(C)::S(J),XQ(c)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • S(J);CHECK
      • Vars
        • Q(c);XS(J)::S(C),XQ(c)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,P_SPINQ(c)
    • Try
      • R(I);CHECK,P_SPINR(I),XP(b)
      • Refutation
        • Q(c);CHECK,XR(I)
    • Try
      • P(L);
      • Threat
        • QAR2(L)
      • Vars
        • Q(c);CHECK,N_GUARD::QAB(E),XQ(c)
        • Q(c);N_GUARD,N_SPINP(b)::QAR1(E),XQ(c)
        • Q(c);N_GUARD::S(J),XQ(c)
        • Q(c);N_GUARD::QAR1(E)
      • Refutation
        • Q(c);XS(J)
    • Try
      • P(L);
      • Threat
        • R(L)
      • Vars
        • Q(c);CHECK,N_GUARD::QAB(E),XQ(c)
        • Q(c);N_GUARD,N_SPINP(b)::QAR1(E),XQ(c)
        • Q(c);N_GUARD::S(J),XQ(c)
        • Q(c);N_GUARD::QAR1(E)
      • Refutation
        • Q(c);XS(J)
  • Actual
    • S(J);P_SPINS(J),XP(b)
    • Threat
      • QAB1(E)
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XS(J)::R(I),XQ(c)
      • Q(c);CHECK,N_PINS(J)::R(I)+S(J),XQ(c)
      • Q(c);N_PINS(J),OGATE::R1(K)
      • Q(c);N_GUARD,N_PINS(J)::QAR1(E),XQ(c)
      • Q(c);N_GUARD::S(C)
      • Q(c);N_GUARD,N_PINS(J)::S(C),XQ(c)
      • Q(c);N_PINS(J)::R(I)+S(J),XQ(c)
      • Q(c);N_GUARD,N_PINS(J)::QAR1(E)
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