MESON Chess Problem Database

Problem Display
PID: 237390 (5BQ1/K2pR3/2prNP2/1B1kNp2/n2p1P2/3Pn3/8/2r5 w - - 0 1)

Dyachuk, Vasyl Vasilovich

2nd Prize, Schach, 2018-2019

5BQ1/K2pR3/2prNP2/1B1kNp2/n2p1P2/3Pn3/8/2r5

#2

10 + 9

15148 Sadier Collection 2021
45 Schach 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Sc7#
    • 1...Rxe6
      • 2.Rxd7#
    • 1...Sd1
      • 2.Qg2#
    • 1...Sf1
      • 2.Qg2#
    • 1...Sc2
      • 2.Bc4#
      • 2.Qg2#
    • 1...Sg2
      • 2.Qxg2#
    • 1...Sc4
      • 2.Qg2#
    • 1...Sc5
      • 2.Sc7#
    • 1...c5
      • 2.Sc7#
  • Tries
    • 1.Sxd7?
      • threat
        • 2.Sc7#
      • 1...Rxd7+
        • 2.Rxd7#
      • 1...Rxe6
        • 2.Qxe6#
      • 1...cxb5!
    • 1.Sc5+?
      • 1...Re6
        • 2.Rxd7#
      • 1...Kxc5!
    • 1.Sg5+?
      • 1...Re6
        • 2.Rxd7#
      • 1...Kc5!
    • 1.Sg7+?
      • 1...Re6
        • 2.Rxd7#
      • 1...Kc5!
    • 1.Sd8+?
      • 1...Re6
        • 2.Rxd7#
      • 1...Kc5!
    • 1.Bc4+?
      • 1...Sxc4
        • 2.Qg2#
      • 1...Rxc4!
  • Keys
    • 1.Rxd7!
      • threat
        • 2.Rxd6#
      • 1...Rxd7+
        • 2.Sc7#
      • 1...Sc4
        • 2.Bxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(a);SBLOCK::QAB(J)+S(E),DCHECK
    • R(h);OGATEB,P_SPINR(h),XS(E)::R(H),XP(i)
    • S(b);N_GUARD::QAB(J)
    • S(b);N_GUARD::QAB(J),XS(b)
    • S(c);SBLOCK::QAB(J)+S(E),DCHECK
    • P(g);SBLOCK::QAB(J)+S(E),DCHECK
  • Tries
    • Try
      • S(D);XP(i)
      • Threat
        • QAB(J)+S(E),DCHECK
      • Vars
        • R(h);CHECK,OGATE,XS(D)::R(H),XR(h)
        • R(h);OGATE,P_SPINR(h),XS(E)::QAB1(J),XR(h)
      • Refutation
        • P(g);XB(C)
    • Try
      • S(E);CHECK
      • Vars
        • R(h);P_SPINR(h)::R(H),XP(i)
      • Refutation
        • K(e);P-FLIGHT,XS(E)
    • Try
      • S(E);CHECK
      • Vars
        • R(h);P_SPINR(h)::R(H),XP(i)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • R(h);P_SPINR(h)::R(H),XP(i)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • R(h);P_SPINR(h)::R(H),XP(i)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • S(b);XB(C)::QAB(J)
      • Refutation
        • R(a);XB(C)
  • Actual
    • R(H);P_PINR(h),XP(i)
    • Threat
      • R1(H),XR(h)
    • Vars
      • R(h);CHECK,N_SPINR(h),XR(H)::QAB(J)+S(E),DCHECK
      • S(b);S_CUTR(a)::B(C),XP(g)
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