MESON Chess Problem Database

Problem Display
PID: 169143 (8/8/b1Q1pp1b/p7/6N1/r1PkP1p1/PR1B2P1/R3K3 w Q - 0 1)

Stepochkin, Anatoly Viktorovich

Comm., Liylu-75 JT (SuperProblem), 2016

8/8/b1Q1pp1b/p7/6N1/r1PkP1p1/PR1B2P1/R3K3

#2

10 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qd5#
    • 1...f5
      • 2.Se5#
  • Tries
    • 1.Sxf6?
      • threat
        • 2.Qe4#
        • 2.Qxa6#
      • 1...Rxc3
        • 2.Qe4#
        • 2.Qxc3#
      • 1...Rb3
        • 2.Qe4#
      • 1...Bc4
        • 2.Qe4#
      • 1...Bb5
        • 2.Qe4#
        • 2.Qxb5#
      • 1...Bb7
        • 2.Qb5#
      • 1...Bc8
        • 2.Qe4#
        • 2.Qb5#
      • 1...Ra4!
    • 1.Rd1?
      • threat
        • 2.Bc1#
      • 1...Bxe3
        • 2.Bxe3#
      • 1...Bc4!
    • 1.Qb5+?
      • 1...Ke4
        • 2.Sxf6#
      • 1...Bxb5!
    • 1.Qd7+?
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4!
    • 1.Qd6+?
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4!
  • Keys
    • 1.0-0-0!
      • threat
        • 2.Be1#
      • 1...Rxc3+
        • 2.Bxc3#
      • 1...Ke2
        • 2.Qxa6#
      • 1...Bxe3
        • 2.Bxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • P(f);N_GUARD::QAR2(J)
    • P(g);N_GUARD::S(I)
  • Tries
    • Try
      • S(I);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAB1(J)
        • B(e);::QAB1(J)
        • B(e);N_GUARD::QAB(J)
      • Refutation
        • R(a);
    • Try
      • R(A);
      • Threat
        • R(A)+B(E)
      • Vars
        • B(h);OGATE,XP(H)::R(A)+B(E),XB(h)
      • Refutation
        • B(e);
    • Try
      • Q(J);CHECK
      • Vars
        • K(b);S_FLIGHT::S(I),XP(g)
      • Refutation
        • B(e);XQ(J)
    • Try
      • Q(J);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(J)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(J);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(J)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(B);0-0-0
    • Threat
      • R(A)+B(E)
    • Vars
      • R(a);CHECK,OGATE,XP(G)::R(A)+B(E),XR(a)
      • K(b);S_FLIGHT::QAB(J),XB(e)
      • B(h);OGATE,P_PINB(E),XP(H)::R(A)+B(E),XB(h)
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