MESON Chess Problem Database

Problem Display
PID: 255367 (K7/2p3p1/N2p1pr1/pP1kpQ2/B5p1/1nP5/1NbPR2B/4b3 w - - 0 1)

Derevchuk, Oleksandr Andrinovich

Problemist Ukraini, 2021

K7/2p3p1/N2p1pr1/pP1kpQ2/B5p1/1nP5/1NbPR2B/4b3

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Bxb3#
    • 1...Be4
      • 2.Bxb3#
    • 1...Bxf5
      • 2.Bxb3#
    • 1...Sd4
      • 2.c4#
    • 1...Sc5
      • 2.Sxc7#
    • 1...c5
      • 2.Sc7#
  • Tries
    • 1.Bg1?
      • threat
        • 2.Sxc7#
        • 2.c4#
      • 1...Bxf5
        • 2.Sxc7#
        • 2.Bxb3#
      • 1...Sxd2
        • 2.Sxc7#
      • 1...Bd3
        • 2.Sxc7#
      • 1...Sd4
        • 2.c4#
      • 1...c5
        • 2.Sc7#
        • 2.c4#
      • 1...c6
        • 2.Sc7#
        • 2.c4#
      • 1...Bf2!
    • 1.Re4?
      • threat
        • 2.c4#
      • 1...Bxe4
        • 2.Bxb3#
      • 1...Sxd2
        • 2.Rd4#
      • 1...Bd3!
    • 1.Qe4+?
      • 1...Bxe4
        • 2.Bxb3#
      • 1...Ke6!
    • 1.Qc8?
      • threat
        • 2.Qg8#
      • 1...Bf5
        • 2.Bxb3#
      • 1...Sd4
        • 2.c4#
      • 1...Sc5
        • 2.Sxc7#
      • 1...f5!
    • 1.d4?
      • threat
        • 2.Sxc7#
      • 1...Sxd4
        • 2.c4#
      • 1...c5
        • 2.Sc7#
      • 1...c6
        • 2.Sc7#
      • 1...Bxc3!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qf7#
      • 1...Bf5
        • 2.Bxb3#
      • 1...Sd4
        • 2.c4#
      • 1...Sc5
        • 2.Sxc7#
      • 1...f5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(b);N_GUARD::B(F),XS(c)
    • B(b);N_GUARD,N_SPINP(g),XQ(H)::B(F),XS(c)
    • S(c);SBLOCK::P(E)
    • S(c);SBLOCK::S(I),XP(k)
    • P(k);SBLOCK::S(I)
  • Tries
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XP(B)::S(I),XP(k)
        • B(b);::S(I),XP(k)
        • S(c);::P(E)
      • Refutation
        • B(a);
    • Try
      • R(C);
      • Threat
        • P(E)
      • Vars
        • B(b);N_GUARD,XR(C)::B(F),XS(c)
        • S(c);N_GUARD,XP(B)::R1(C)
      • Refutation
        • B(b);
    • Try
      • Q(H);CHECK,N_PINP(g)
      • Vars
        • B(b);XQ(H)::B(F),XS(c)
      • Refutation
        • K(f);P_SPINP(g),S_FLIGHT
    • Try
      • Q(H);N_PINP(g)
      • Threat
        • QAB(H)
      • Vars
        • B(b);N_GUARD::B(F),XS(c)
        • S(c);SBLOCK::P(E)
        • S(c);SBLOCK::S(I),XP(k)
      • Refutation
        • P(i);
    • Try
      • P(B);
      • Threat
        • S(I),XP(k)
      • Vars
        • S(c);SBLOCK,XP(B)::P(E)
        • P(k);::S(I)
      • Refutation
        • B(a);XP(E)
  • Actual
    • Q(H);N_PINP(g),P_PINP(h)
    • Threat
      • QAB(H)
    • Vars
      • B(b);N_GUARD::B(F),XS(c)
      • S(c);SBLOCK::P(E)
      • S(c);SBLOCK::S(I),XP(k)
      • P(i);N_GUARD::R1(C),XP(g)
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