MESON Chess Problem Database

Problem Display
PID: 245463 (4R1r1/1K2nB2/5p2/1pp2P2/3kP1P1/pQ1PNR2/2P4B/1b6 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Candela MT (Problemas), 2018

4R1r1/1K2nB2/5p2/1pp2P2/3kP1P1/pQ1PNR2/2P4B/1b6

#2

12 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc2
      • 2.Sxc2#
    • 1...Sxf5
      • 2.Sxf5#
    • 1...a2
      • 2.Qb2#
    • 1...b4
      • 2.Qc4#
  • Tries
    • 1.Sd1?
      • threat
        • 2.Qc3#
        • 2.c3#
      • 1...Bxc2
        • 2.Qc3#
      • 1...Sd5
        • 2.Qxd5#
      • 1...b4
        • 2.Qc4#
      • 1...c4!
    • 1.Sc4?
      • threat
        • 2.Bg1#
        • 2.c3#
      • 1...Rxg4
        • 2.c3#
      • 1...Bxc2
        • 2.Bg1#
      • 1...Sxf5
        • 2.c3#
      • 1...bxc4
        • 2.Qxc4#
        • 2.c3#
      • 1...b4
        • 2.Bg1#
      • 1...Sd5!
    • 1.Be5+?
      • 1...Kxe5
        • 2.Qd5#
      • 1...fxe5!
    • 1.Rd8+?
      • 1...Sd5
        • 2.Rxd5#
      • 1...Rxd8!
  • Keys
    • 1.Bg1!
      • threat
        • 2.Sc4#
      • 1...Ke5
        • 2.Qd5#
      • 1...Rxg4
        • 2.Sxg4#
      • 1...Sxf5
        • 2.Sxf5#
      • 1...c4
        • 2.Sxc4#
      • 1...Sd5
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(a);XP(A)::S(E),XB(a)
    • S(g);XP(I)::S(E),XS(g)
    • P(b);N_GUARD::QAB(C)
    • P(d);N_GUARD::QAR1(C)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XP(A)::QAB1(C)
        • S(g);N_GUARD::QAR1(C),XS(g)
        • P(d);N_GUARD::QAR1(C)
      • Refutation
        • P(e);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(h);XP(H)::P(A)
        • B(a);XP(A)::B(B)
        • S(g);XP(I)::P(A)
        • P(d);::B(B)
      • Refutation
        • S(g);
    • Try
      • B(B);CHECK
      • Vars
        • K(c);P_SPINS(g),S_FLIGHT,XB(B)::QAR1(C)
      • Refutation
        • P(f);XB(B)
    • Try
      • R(L);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::R1(L),XS(g)
      • Refutation
        • R(h);XR(L)
  • Actual
    • B(B);
    • Threat
      • B(B)+S(E)
    • Vars
      • K(c);P_SPINS(g),S_FLIGHT::QAR1(C)
      • R(h);XP(H)::B(B)+S(E),XR(h)
      • S(g);XP(I)::B(B)+S(E),DCHECK,XS(g)
      • P(e);::B(B)+S(E),XP(e)
      • S(g);::B(B)+S(E),XS(g)
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