MESON Chess Problem Database

Problem Display
PID: 241168 (8/2B1N3/r1pRPp2/1pk2p1q/4R2p/P2Pp1p1/3PN1P1/3b1Q1K w - - 0 1)

Heyl, Peter

Sachsische Zeitung, 2002

8/2B1N3/r1pRPp2/1pk2p1q/4R2p/P2Pp1p1/3PN1P1/3b1Q1K

#2

12 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe2
      • 2.Qxf5#
    • 1...Qf7
      • 2.Qxf5#
    • 1...Qe8
      • 2.Qxf5#
    • 1...Qh6
      • 2.Qxf5#
    • 1...Qh8
      • 2.Qxf5#
    • 1...Rxa3
      • 2.Rxc6#
    • 1...Ra4
      • 2.Rxc6#
    • 1...Ra5
      • 2.Rxc6#
    • 1...Ra7
      • 2.Rxc6#
    • 1...Ra8
      • 2.Rxc6#
    • 1...Bxe2
      • 2.Qc1#
    • 1...exd2
      • 2.Qg1#
  • Tries
    • 1.Sg1?
      • threat
        • 2.d4#
      • 1...Rxa3
        • 2.Rxc6#
      • 1...Qe2
        • 2.Qxf5#
      • 1...Ra4
        • 2.Rxc6#
      • 1...Be2
        • 2.Qc1#
      • 1...e2!
    • 1.Sc3?
      • threat
        • 2.d4#
      • 1...Rxa3
        • 2.Rxc6#
      • 1...Qe2
        • 2.Qxf5#
      • 1...Ra4
        • 2.Rxc6#
      • 1...e2
        • 2.Qg1#
      • 1...Be2!
    • 1.Sxg3?
      • threat
        • 2.d4#
      • 1...Rxa3
        • 2.Rxc6#
      • 1...Qe2
        • 2.Qxf5#
      • 1...Ra4
        • 2.Rxc6#
      • 1...Be2
        • 2.Qc1#
      • 1...e2
        • 2.Qg1#
        • 2.Qf2#
      • 1...hxg3+!
    • 1.Sf4?
      • threat
        • 2.d4#
      • 1...Rxa3
        • 2.Rxc6#
      • 1...Ra4
        • 2.Rxc6#
      • 1...Be2
        • 2.Qc1#
      • 1...e2
        • 2.Qg1#
      • 1...Qe2!
    • 1.Qxd1?
      • threat
        • 2.Qc2#
        • 2.Qc1#
      • 1...Rxa3
        • 2.Rxc6#
      • 1...exd2
        • 2.Qc2#
        • 2.Qg1#
      • 1...Ra4
        • 2.Rxc6#
      • 1...b4!
  • Keys
    • 1.Sc1!
      • threat
        • 2.d4#
      • 1...Rxa3
        • 2.Rxc6#
      • 1...Qe2
        • 2.Qxf5#
      • 1...Ra4
        • 2.Rxc6#
      • 1...Be2
        • 2.Sb3#
      • 1...e2
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • Q(h);N_GUARD,XS(D)::QAR(A),XP(g)
    • Q(h);N_GUARD::QAR(A),XP(g)
    • R(i);N_GUARD,XP(F)::R1(I),XP(j)
    • R(i);N_GUARD::R1(I),XP(j)
    • B(a);OGATE,XS(D)::QAR(A)
    • P(b);OGATEB,XP(C)::QAB(A)
  • Tries
    • Try
      • S(D);
      • Threat
        • P(G)
      • Vars
        • R(i);N_GUARD,XP(F)::R1(I),XP(j)
        • Q(h);N_GUARD::QAR(A),XP(g)
        • R(i);N_GUARD::R1(I),XP(j)
        • B(a);OGATE::QAR(A)
      • Refutation
        • P(b);
    • Try
      • S(D);
      • Threat
        • P(G)
      • Vars
        • R(i);N_GUARD,XP(F)::R1(I),XP(j)
        • Q(h);N_GUARD::QAR(A),XP(g)
        • R(i);N_GUARD::R1(I),XP(j)
        • P(b);OGATEB::QAB(A)
      • Refutation
        • B(a);
    • Try
      • S(D);XP(c)
      • Threat
        • P(G)
      • Vars
        • R(i);N_GUARD,XP(F)::R1(I),XP(j)
        • Q(h);N_GUARD::QAR(A),XP(g)
        • R(i);N_GUARD::R1(I),XP(j)
        • B(a);OGATE::QAR(A)
      • Refutation
        • P(d);CHECK,XS(D)
    • Try
      • S(D);
      • Threat
        • P(G)
      • Vars
        • R(i);N_GUARD,XP(F)::R1(I),XP(j)
        • R(i);N_GUARD::R1(I),XP(j)
        • B(a);OGATE::QAR(A)
        • P(b);OGATEB::QAB(A)
      • Refutation
        • Q(h);
    • Try
      • Q(A);XB(a)
      • Threat
        • DUALS(2)
      • Vars
        • R(i);N_GUARD,XP(F)::R1(I),XP(j)
        • R(i);N_GUARD::R1(I),XP(j)
      • Refutation
        • P(e);
  • Actual
    • S(D);
    • Threat
      • P(G)
    • Vars
      • R(i);N_GUARD,XP(F)::R1(I),XP(j)
      • Q(h);N_GUARD::QAR(A),XP(g)
      • R(i);N_GUARD::R1(I),XP(j)
      • B(a);N_GUARD::S(D)
      • P(b);OGATEB::QAB(A)
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