MESON Chess Problem Database

Problem Display
PID: 263059 (7B/pppp4/2b5/6pp/1pB1k2P/r7/PP2PQP1/4K2R w - - 0 1)

Basisty, Mark Borisovich

2nd Comm., SuperProblem, 2018

7B/pppp4/2b5/6pp/1pB1k2P/r7/PP2PQP1/4K2R

#2

10 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa2
      • 2.Qf3#
    • 1...Rd3
      • 2.exd3#
    • 1...Rf3
      • 2.Qxf3#
    • 1...Ra4
      • 2.Qf3#
    • 1...Ra5
      • 2.Qf3#
    • 1...Ra6
      • 2.Qf3#
    • 1...b3
      • 2.Qf3#
    • 1...gxh4
      • 2.Rxh4#
  • Tries
    • 1.Qf6?
      • threat
        • 2.Qe5#
      • 1...Ke3
        • 2.Qd4#
      • 1...Ra5
        • 2.Qf3#
      • 1...d6!
    • 1.e3?
      • threat
        • 2.Qf3#
      • 1...g4
        • 2.Qf4#
      • 1...Rxe3+!
    • 1.g4?
      • threat
        • 2.Qd4#
      • 1...Rd3
        • 2.exd3#
      • 1...Re3
        • 2.Qf5#
      • 1...hxg4!
  • Keys
    • 1.Rf1!
      • threat
        • 2.Qd4#
      • 1...Rf3
        • 2.Qxf3#
      • 1...Rd3
        • 2.exd3#
      • 1...Re3
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD,XP(C)::QAB1(F)
    • R(a);OGATE::P(E),XR(a)
    • R(a);N_GUARD::QAB1(F),XR(a)
    • R(a);N_GUARD::QAB1(F)
    • P(b);S_CUTR(a)::QAB1(F)
    • P(d);OGATE,XP(I)::R(B),XP(d)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);N_GUARD,P-FLIGHT::QAB1(F)
        • R(a);N_GUARD::QAB1(F)
      • Refutation
        • P(j);
    • Try
      • P(E);
      • Threat
        • QAB1(F)
      • Vars
        • P(d);N_GUARD::QAR1(F)
      • Refutation
        • R(a);CHECK,XP(E)
    • Try
      • P(G);
      • Threat
        • QAR1(F)
      • Vars
        • R(a);OGATE::P(E),XR(a)
        • R(a);P_PINP(E),SBLOCK::QAB1(F)
      • Refutation
        • P(e);XP(G)
  • Actual
    • R(B);
    • Threat
      • QAR1(F)
    • Vars
      • R(a);N_GUARD::QAB1(F),XR(a)
      • R(a);OGATE::P(E),XR(a)
      • R(a);P_PINP(E),SBLOCK::QAB1(F)
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