MESON Chess Problem Database

Problem Display
PID: 171253 (4r3/7b/3R3K/2p5/1nP1kPQN/4P3/7b/2B1nN2 w - - 0 1)

Archakov, Vladimir Mikhailovich

Sinfonie Scacchistiche, 1970

4r3/7b/3R3K/2p5/1nP1kPQN/4P3/7b/2B1nN2

#2

9 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Re6+
      • 2.Qxe6#
    • 1...Ra8
      • 2.Qe6#
    • 1...Rb8
      • 2.Qe6#
    • 1...Rc8
      • 2.Qe6#
    • 1...Rd8
      • 2.Qe6#
    • 1...Rf8
      • 2.Qe6#
    • 1...Rg8
      • 2.Qe6#
    • 1...Rh8
      • 2.Qe6#
    • 1...Bg1
      • 2.Sg3#
    • 1...Bg3
      • 2.Sxg3#
    • 1...Bxf4+
      • 2.Qxf4#
    • 1...Bf5
      • 2.Qxf5#
    • 1...Bg6
      • 2.Qxg6#
    • 1...Bg8
      • 2.Qf5#
      • 2.Qg6#
    • 1...Sec2
      • 2.Qf3#
      • 2.Qg2#
    • 1...Sg2
      • 2.Qf3#
      • 2.Qxg2#
    • 1...Sed3
      • 2.Qf3#
      • 2.Qg2#
    • 1...Sf3
      • 2.Qxf3#
  • Tries
    • 1.Qg2+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sxg2!
    • 1.f5+?
      • 1...Bf4+
        • 2.Qxf4#
      • 1...Ke5!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Sd2#
      • 1...Re6+
        • 2.Rxe6#
      • 1...Bxf4+
        • 2.exf4#
      • 1...Sf3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • R(g);CHECK,N_GUARD::QAR2(F),XR(g)
    • R(g);N_GUARD::QAR2(F)
    • B(b);N_GUARD::S(B)
    • B(b);N_GUARD::S(B),XB(b)
    • B(b);CHECK,OGATE,P_SPINB(b),XP(E)::QAR1(F),XB(b)
    • B(f);N_GUARD::QAB1(F),XB(f)
    • B(f);N_GUARD::QAB(F),XB(f)
    • S(a);N_GUARD::QAB1(F),XS(a)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(F),XS(a)
      • Refutation
        • S(a);XQ(F)
    • Try
      • P(E);CHECK
      • Vars
        • B(b);CHECK,N_GUARD,P_SPINB(b)::QAR1(F),XB(b)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(F);
    • Threat
      • S(B)
    • Vars
      • R(g);CHECK,N_GUARD::R(H),XR(g)
      • B(b);CHECK,OGATE,XP(E)::QAR(F)+P(C),XB(b)
      • S(a);N_GUARD::QAB1(F),XS(a)
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