MESON Chess Problem Database

Problem Display
PID: 263193 (1K1b3R/ppn4p/q7/3r4/p4BPk/Q2B4/4pN2/Rb5n w - - 0 1)

Mitroshin, Anatoly Anatolyovich

Seredinsky, Volodimir Stepanovich

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

SuperProblem, 2021

1K1b3R/ppn4p/q7/3r4/p4BPk/Q2B4/4pN2/Rb5n

#2

8 + 12

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Rxh1#
    • 1...Bc2
      • 2.Rxh1#
    • 1...Bxd3
      • 2.Rxh1#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Qh3#
      • 1...Sxf2
        • 2.Qg3#
      • 1...Bd3
        • 2.Rxh1#
      • 1...Sg3
        • 2.Qxg3#
      • 1...Rd3!
    • 1.Bb5?
      • threat
        • 2.Qh3#
      • 1...Sxf2
        • 2.Qg3#
      • 1...Bd3
        • 2.Rxh1#
      • 1...Sg3
        • 2.Qxg3#
      • 1...Rd3!
    • 1.Bf5?
      • threat
        • 2.Qh3#
      • 1...Sxf2
        • 2.Qg3#
      • 1...Qd3
        • 2.Rxh7#
      • 1...Bd3
        • 2.Rxh1#
      • 1...Sg3
        • 2.Qxg3#
      • 1...Rd3!
    • 1.Bxa6?
      • threat
        • 2.Qh3#
      • 1...Sxf2
        • 2.Qg3#
      • 1...Rd3
        • 2.Rxh7#
      • 1...Bd3
        • 2.Rxh1#
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sxa6+!
    • 1.Bg6?
      • threat
        • 2.Qh3#
      • 1...Sxf2
        • 2.Qg3#
      • 1...Rd3
        • 2.Rxh7#
      • 1...Bd3
        • 2.Rxh1#
      • 1...Sg3
        • 2.Qxg3#
      • 1...Qd3!
    • 1.Rxh7+?
      • 1...Rh5
        • 2.Rxh5#
      • 1...Qh6!
  • Keys
    • 1.Bxh7!
      • threat
        • 2.Qh3#
      • 1...Sxf2
        • 2.Qg3#
      • 1...Rd3
        • 2.Bg6#
      • 1...Qd3
        • 2.Bf5#
      • 1...Bd3
        • 2.Rxh1#
      • 1...Sg3
        • 2.Qxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(a);OGATE::R(A),XS(b)
    • B(a);OGATE,XB(D)::R(A),XS(b)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR1(C)
      • Vars
        • S(b);N_GUARD,XS(B)::QAB1(C)
        • B(a);OGATE::R(A),XS(b)
        • S(b);N_GUARD::QAB1(C),XS(b)
      • Refutation
        • R(f);
    • Try
      • B(D);
      • Threat
        • QAR1(C)
      • Vars
        • S(b);N_GUARD,XS(B)::QAB1(C)
        • B(a);OGATE::R(A),XS(b)
        • S(b);N_GUARD::QAB1(C),XS(b)
      • Refutation
        • R(f);
    • Try
      • B(D);
      • Threat
        • QAR1(C)
      • Vars
        • S(b);N_GUARD,XS(B)::QAB1(C)
        • Q(g);N_GUARD::R(H),XP(k)
        • B(a);OGATE::R(A),XS(b)
        • S(b);N_GUARD::QAB1(C),XS(b)
      • Refutation
        • R(f);
    • Try
      • B(D);XQ(g)
      • Threat
        • QAR1(C)
      • Vars
        • S(b);N_GUARD,XS(B)::QAB1(C)
        • R(f);N_GUARD,S_CUTB(a)::R(H),XP(k)
        • B(a);OGATE::R(A),XS(b)
        • S(b);N_GUARD::QAB1(C),XS(b)
      • Refutation
        • S(j);CHECK,XB(D)
    • Try
      • B(D);
      • Threat
        • QAR1(C)
      • Vars
        • S(b);N_GUARD,XS(B)::QAB1(C)
        • R(f);N_GUARD::R(H),XP(k)
        • B(a);OGATE::R(A),XS(b)
        • S(b);N_GUARD::QAB1(C),XS(b)
      • Refutation
        • Q(g);
    • Try
      • R(H);CHECK,XP(k)
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::R1(H),XR(f)
      • Refutation
        • Q(g);P_SPINQ(g)
  • Actual
    • B(D);XP(k)
    • Threat
      • QAR1(C)
    • Vars
      • S(b);N_GUARD,XS(B)::QAB1(C)
      • R(f);N_GUARD::R(H)+B(D)
      • Q(g);N_GUARD::R(H)+B(D)
      • B(a);OGATE::R(A),XS(b)
      • S(b);N_GUARD::QAB1(C),XS(b)
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