MESON Chess Problem Database

Problem Display
PID: 263068 (2R5/1b4K1/4P3/4pPR1/2N1k3/1p2B3/8/3Qn3 w - - 0 1)

Sorochan, Vladimir Mikhailovich

1st Comm., SuperProblem, 2018

2R5/1b4K1/4P3/4pPR1/2N1k3/1p2B3/8/3Qn3

#2

8 + 5

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Qh1#
  • Tries
    • 1.Kf6?
      • threat
        • 2.Rg4#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sg2!
    • 1.Kg6?
      • threat
        • 2.Rg4#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sg2!
    • 1.Rg3?
      • threat
        • 2.Sd6#
      • 1...Kxf5
        • 2.Qg4#
      • 1...Sd3
        • 2.Qf3#
      • 1...Sf3!
    • 1.Rd8?
      • threat
        • 2.Qg4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sf3
        • 2.Qb1#
        • 2.Qd3#
      • 1...Sg2!
    • 1.Rf8?
      • threat
        • 2.Rg4#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sg2!
    • 1.Qxb3?
      • threat
        • 2.Sd2#
      • 1...Kd5
        • 2.Qxb7#
      • 1...Sd3
        • 2.Qxb7#
      • 1...Sf3
        • 2.Sd6#
      • 1...Kf3!
    • 1.Qg4+?
      • 1...Kd5
        • 2.Rc5#
      • 1...Kd3!
    • 1.Qd4+?
      • 1...Kf3
        • 2.Qg4#
      • 1...exd4!
    • 1.f6?
      • threat
        • 2.Rxe5#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sf3!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Rxe5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sf3
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE,SBLOCK::QAB(A)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • R(E)
      • Vars
        • S(a);OGATE,SBLOCK::QAB(A)
      • Refutation
        • S(a);
    • Try
      • K(G);P-FLIGHT
      • Threat
        • R(E)
      • Vars
        • S(a);OGATE,SBLOCK::QAB(A)
      • Refutation
        • S(a);
    • Try
      • R(E);
      • Threat
        • S(C)
      • Vars
        • K(c);N_GUARD,S_FLIGHT,XP(D)::QAB1(A)
        • S(a);N_GUARD,SBLOCK::QAB1(A)
      • Refutation
        • S(a);
    • Try
      • R(H);
      • Threat
        • QAR2(A)
      • Vars
        • B(e);N_GUARD::QAB1(A),XB(e)
        • S(a);OGATE::QAB(A)
      • Refutation
        • S(a);
    • Try
      • R(H);
      • Threat
        • R(E)
      • Vars
        • S(a);OGATE,SBLOCK::QAB(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);XP(b)
      • Threat
        • S(C)
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAB(A),XB(e)
        • S(a);SBLOCK::QAB(A),XB(e)
        • S(a);SBLOCK::S(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • P(d);XQ(A)
    • Try
      • P(D);
      • Threat
        • R1(E),XP(d)
      • Vars
        • S(a);OGATE,SBLOCK::QAB(A)
      • Refutation
        • S(a);
  • Actual
    • R(H);
    • Threat
      • R1(H),XP(d)
    • Vars
      • B(e);N_GUARD::QAB1(A),XB(e)
      • S(a);OGATE,SBLOCK::QAB(A)
      • S(a);N_GUARD,SBLOCK::QAB(A)
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