MESON Chess Problem Database

Problem Display
PID: 256952 (1b2nNb1/6Rp/QPP5/1p1k1P2/1B6/nP1NPK2/8/3R4 w - - 0 1)

Guida, Marco

StrateGems, 2021

1b2nNb1/6Rp/QPP5/1p1k1P2/1B6/nP1NPK2/8/3R4

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Qb7#
    • 1...Sb1
      • 2.Qxb5#
    • 1...Sc2
      • 2.Qxb5#
    • 1...Sc4
      • 2.Qxb5#
  • Tries
    • 1.Sc1+?
      • 1...Kxc6
        • 2.Qb7#
        • 2.b7#
      • 1...Ke5!
    • 1.Se1+?
      • 1...Kxc6
        • 2.Qb7#
        • 2.b7#
      • 1...Ke5!
    • 1.Sb2+?
      • 1...Kxc6
        • 2.Qb7#
        • 2.b7#
      • 1...Ke5!
    • 1.Sf2+?
      • 1...Kxc6
        • 2.Qb7#
        • 2.b7#
      • 1...Ke5!
    • 1.Sf4+?
      • 1...Kxc6
        • 2.Qb7#
        • 2.b7#
      • 1...Ke5!
    • 1.Sc5+?
      • 1...Kxc6
        • 2.Qb7#
        • 2.b7#
      • 1...Ke5!
    • 1.Sg6?
      • threat
        • 2.Sde5#
        • 2.Se7#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Be5
        • 2.Sdxe5#
        • 2.Se7#
      • 1...Bd6
        • 2.Sde5#
      • 1...Sb1
        • 2.Se7#
        • 2.Qxb5#
      • 1...Sc2
        • 2.Se7#
        • 2.Qxb5#
      • 1...Sc4
        • 2.Se7#
        • 2.Qxb5#
      • 1...hxg6!
    • 1.Re7?
      • threat
        • 2.Se5#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Be5
        • 2.Sxe5#
      • 1...Sb1
        • 2.Qxb5#
      • 1...Sc2
        • 2.Qxb5#
      • 1...Sc4
        • 2.Qxb5#
      • 1...Be6!
    • 1.e4+?
      • 1...Kxc6
        • 2.Qb7#
        • 2.b7#
      • 1...Kd4!
    • 1.c7?
      • threat
        • 2.Qb7#
        • 2.Qa8#
      • 1...Kc6
        • 2.Se5#
      • 1...Sxc7
        • 2.Qb7#
      • 1...Ba7
        • 2.Qb7#
      • 1...Sd6!
  • Keys
    • 1.Sd7!
      • threat
        • 2.S3e5#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Be5
        • 2.S3xe5#
      • 1...Sb1
        • 2.Qxb5#
      • 1...Sc2
        • 2.Qxb5#
      • 1...Sc4
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,S_FLIGHT,XP(J)::QAB1(H)
    • S(a);N_GUARD::QAR2(H),XP(b)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(L);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);OGATEB,S_FLIGHT,XP(J)::QAB1(H)
        • B(e);::R(A)+S(C)
      • Refutation
        • P(d);XS(L)
    • Try
      • R(K);
      • Threat
        • R(A)+S(C)
      • Vars
        • K(c);OGATEB,S_FLIGHT,XP(J)::QAB1(H)
        • B(e);::R(A)+S(C),XB(e)
        • S(a);N_GUARD::QAR2(H),XP(b)
      • Refutation
        • B(g);
    • Try
      • P(D);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • P(J);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);N_GUARD,S_FLIGHT::S(C)
        • S(f);XP(J)::QAB(H)
        • B(e);::QAB(H)
      • Refutation
        • S(f);
  • Actual
    • S(L);
    • Threat
      • R(A)+S(C)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XP(J)::QAB(H)
      • B(e);::R(A)+S(C),XB(e)
      • S(a);N_GUARD::QAR2(H),XP(b)
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