MESON Chess Problem Database

Problem Display
PID: 250166 (6KB/1B3Q2/2b5/1qr3pN/2p1k1p1/2n3R1/5PP1/b3r3 w - - 0 1)

Sarychev, Aleksandr Vasilyevich

Sarychev, Kirill Vasilyevich

64 Shakhmatnoe obozrenie, 1927

6KB/1B3Q2/2b5/1qr3pN/2p1k1p1/2n3R1/5PP1/b3r3

#2

8 + 10

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Re3#
    • 1...Rc1
      • 2.Re3#
    • 1...Rd1
      • 2.Re3#
    • 1...Rf1
      • 2.Re3#
    • 1...Rg1
      • 2.Re3#
    • 1...Rh1
      • 2.Re3#
    • 1...Re3
      • 2.Rxe3#
    • 1...Bd5
      • 2.Qe6#
    • 1...Se2
      • 2.Re3#
    • 1...Sd5
      • 2.Qg6#
      • 2.Qh7#
  • Tries
    • 1.Rf3?
      • threat
        • 2.Sg3#
      • 1...gxf3
        • 2.Qxf3#
      • 1...Re3
        • 2.Rxe3#
      • 1...Se2
        • 2.Re3#
      • 1...g3
        • 2.Sxg3#
      • 1...Re5!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Rxg4#
      • 1...Bd5+
        • 2.Qe6#
      • 1...Rd5
        • 2.Qxg4#
      • 1...Rf5
        • 2.Qd4#
      • 1...Se2
        • 2.Re3#
      • 1...Sd5
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::R1(C)
    • R(b);N_GUARD::R1(C),XR(b)
    • B(j);P_PINQ(F),S_CUTR(h)::QAR2(F)
    • S(c);S_CUTR(b)::R1(C)
  • Tries
    • Try
      • R(C);
      • Threat
        • S(D)
      • Vars
        • P(f);OGATE,XR(C)::QAB1(F),XP(f)
        • R(b);N_GUARD::R1(C),XR(b)
        • S(c);S_CUTR(b)::R1(C)
        • P(f);::S(D),XP(f)
      • Refutation
        • R(h);
  • Actual
    • Q(F);
    • Threat
      • R(C),XP(f)
    • Vars
      • B(j);CHECK,S_CUTR(h)::QAR2(F)
      • R(h);N_SPINB(j),SBLOCK::QAR2(F),XP(f)
      • R(h);SBLOCK::QAR1(F)
      • S(c);S_CUTR(b)::R1(C)
      • S(c);N_SPINB(j),SBLOCK,S_CUTR(h)::QAB(F)
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