MESON Chess Problem Database

Problem Display
PID: 236560 (Bn6/8/4p3/Q1p3K1/6N1/3PB1p1/R5P1/nq1RN2k w - - 0 1)

Heyl, Peter

Rochade Europa, 2009

Bn6/8/4p3/Q1p3K1/6N1/3PB1p1/R5P1/nq1RN2k

#2

10 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa2
      • 2.Sc2#
    • 1...Qc2
      • 2.Sxc2#
    • 1...Qxd3
      • 2.Sxd3#
    • 1...Qb2
      • 2.Sc2#
    • 1...Qb3
      • 2.Sc2#
    • 1...Qb5
      • 2.Sc2#
      • 2.Sf3#
    • 1...Qb6
      • 2.Sc2#
      • 2.Sf3#
    • 1...Qb7
      • 2.Sf3#
  • Tries
    • 1.Rxb1?
      • threat
        • 2.Sc2#
        • 2.Sf3#
      • 1...Sc2
        • 2.Sxc2#
      • 1...Sc6
        • 2.Sf3#
      • 1...Sb3!
    • 1.Rf2?
      • threat
        • 2.Rf1#
      • 1...Kg1
        • 2.Sf3#
      • 1...Qxd3
        • 2.Sxd3#
      • 1...gxf2!
    • 1.Qc3?
      • threat
        • 2.Qh8#
      • 1...Qxd3
        • 2.Sxd3#
      • 1...Qb2
        • 2.Sc2#
      • 1...Qb7
        • 2.Sf3#
      • 1...e5!
    • 1.Qc7?
      • threat
        • 2.Qh7#
      • 1...Qxd3
        • 2.Sxd3#
      • 1...Qb7
        • 2.Sf3#
      • 1...Sd7!
    • 1.Qa7?
      • threat
        • 2.Qh7#
      • 1...Qxd3
        • 2.Sxd3#
      • 1...Qb7
        • 2.Sf3#
      • 1...Sd7!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qh8#
      • 1...Qxd3
        • 2.Sxd3#
      • 1...Qb2
        • 2.Sc2#
      • 1...Qb7
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • Q(b);N_GUARD,XR(C)::R(A)+S(B)
    • Q(b);N_GUARD::R(A)+S(B),XQ(b)
    • Q(b);XP(E)::R(A)+S(B),XQ(b)
    • Q(b);N_GUARD::R(A)+S(B)
  • Tries
    • Try
      • R(A);XQ(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::R(A)+S(B),XS(a)
        • S(g);::R(A)+S(B)
      • Refutation
        • S(a);
    • Try
      • R(C);
      • Threat
        • R(C)
      • Vars
        • K(c);P-FLIGHT::R(A)+S(B),DCHECK
        • Q(b);XP(E)::R(A)+S(B),XQ(b)
      • Refutation
        • P(d);XR(C)
    • Try
      • Q(H);
      • Threat
        • QAB(H)
      • Vars
        • Q(b);XP(E)::R(A)+S(B),XQ(b)
        • Q(b);N_GUARD::R(A)+S(B)
      • Refutation
        • P(f);
    • Try
      • Q(H);
      • Threat
        • QAR(H)
      • Vars
        • Q(b);XP(E)::R(A)+S(B),XQ(b)
        • Q(b);N_GUARD::R(A)+S(B)
      • Refutation
        • S(g);
    • Try
      • Q(H);
      • Threat
        • QAR(H)
      • Vars
        • Q(b);XP(E)::R(A)+S(B),XQ(b)
        • Q(b);N_GUARD::R(A)+S(B)
      • Refutation
        • S(g);
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • Q(b);XP(E)::R(A)+S(B),XQ(b)
      • Q(b);N_GUARD::R(A)+S(B)
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