MESON Chess Problem Database

Problem Display
PID: 240256 (1N1K4/6P1/1p1R4/kr2p3/1nB1r3/1PB5/3p1R2/5q1Q w - - 0 1)

Heyl, Peter

Problem-Forum, 2004

1N1K4/6P1/1p1R4/kr2p3/1nB1r3/1PB5/3p1R2/5q1Q

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Qa1#
    • 1...Qg2
      • 2.Qa1#
    • 1...Qd3
      • 2.Qa1#
    • 1...Qh3
      • 2.Qa1#
    • 1...Qxc4
      • 2.Qa1#
    • 1...Qa1
      • 2.Qxa1#
    • 1...Qxf2
      • 2.Qa1#
    • 1...Re1
      • 2.Qa8#
    • 1...Re2
      • 2.Qa8#
    • 1...Re3
      • 2.Qa8#
    • 1...Rxc4
      • 2.Qa8#
    • 1...Rd4
      • 2.Qa8#
    • 1...Rf4
      • 2.Qa8#
    • 1...Rg4
      • 2.Qa8#
    • 1...Rh4
      • 2.Qa8#
    • 1...Rd5
      • 2.Sc6#
    • 1...d1Q
      • 2.Ra2#
    • 1...d1S
      • 2.Ra2#
    • 1...d1B
      • 2.Ra2#
    • 1...d1R
      • 2.Ra2#
  • Tries
    • 1.Bxb4+?
      • 1...Rxb4
        • 2.Sc6#
      • 1...Kxb4!
    • 1.Bxf1?
      • 1...d1Q
        • 2.Ra2#
      • 1...d1S
        • 2.Ra2#
      • 1...d1B
        • 2.Ra2#
      • 1...d1R
        • 2.Ra2#
      • 1...Re1
        • 2.Qa8#
      • 1...Re2
        • 2.Qa8#
      • 1...Re3
        • 2.Qa8#
      • 1...Rc4
        • 2.Qa8#
      • 1...Rd4
        • 2.Qa8#
      • 1...Rf4
        • 2.Qa8#
      • 1...Rg4
        • 2.Qa8#
      • 1...Rh4
        • 2.Qa8#
      • 1...Rd5
        • 2.Sc6#
      • 1...Rc5!
    • 1.Rf7?
      • threat
        • 2.Ra7#
      • 1...Qxf7
        • 2.Qa1#
      • 1...Qf6+!
    • 1.Qxf1?
      • threat
        • 2.Qa1#
      • 1...d1Q
        • 2.Ra2#
      • 1...d1S
        • 2.Ra2#
      • 1...d1B
        • 2.Ra2#
      • 1...d1R
        • 2.Ra2#
      • 1...Re1!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Ra7#
      • 1...d1Q
        • 2.Ra2#
      • 1...d1R
        • 2.Ra2#
      • 1...Qd3
        • 2.Qa1#
      • 1...Rd4
        • 2.Qa8#
      • 1...Rd5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 15
  • Sets
    • Q(a);OGATE::QAR(A)
    • Q(a);OGATE,P_PINR(F)::QAR(A)
    • Q(a);OGATE,SBLOCK::QAR(A)
    • Q(a);OGATE,XB(E)::QAR(A)
    • Q(a);OGATE::QAR(A),XQ(a)
    • Q(a);OGATE,XR(B)::QAR(A)
    • R(d);OGATE::QAR(A)
    • R(d);OGATE,XB(E)::QAR(A)
    • R(d);OGATE,P_PINR(F)::QAR(A)
    • R(d);OGATE,SBLOCK::QAR(A)
    • R(f);P_PINR(F)::S(H)
    • P(b);OGATE,P_PINR(F)::R(B)
    • P(b);OGATE::R(B)
  • Tries
    • Try
      • B(D);CHECK,XS(c)
      • Vars
        • R(f);XB(D)::S(H)
      • Refutation
        • K(e);S_FLIGHT,XB(D)
    • Try
      • B(E);XQ(a)
      • Vars
        • P(b);OGATE,P_PINR(F)::R(B)
        • P(b);OGATE::R(B)
        • R(d);OGATE::QAR(A)
        • R(d);OGATE,P_PINR(F)::QAR(A)
        • R(d);OGATE,SBLOCK::QAR(A)
        • R(f);P_PINR(F)::S(H)
      • Refutation
        • R(f);
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • Q(a);OGATE,XR(B)::QAR(A)
      • Refutation
        • Q(a);CHECK
    • Try
      • Q(A);XQ(a)
      • Threat
        • QAR(A)
      • Vars
        • P(b);OGATE,P_PINR(F)::R(B)
        • P(b);OGATE::R(B)
      • Refutation
        • R(d);
  • Actual
    • R(F);
    • Threat
      • R(F)
    • Vars
      • P(b);OGATE,P_PINR(F)::R(B)
      • Q(a);OGATE,P_PINR(F)::QAR(A)
      • R(d);OGATE,P_PINR(F)::QAR(A)
      • R(f);P_PINR(F)::S(H)
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